1. The solar lamps are lighting the tunnel. The solar lamps were lighting the tunnel. The solar lamps will be lighting the tunnel. 2. The scientist is developing a new source of energy. The scientist was developing a new source of energy. The scientist will be developing a new source of energy. 3. The engineers are working at the problem of using solar power. The engineers were working at the problem of using solar power. The engineers will be working at the problem of using solar power. 4. The people are not using poor methods of research. The people were not using poor methods of research. The people will not be using poor methods of research. 5. The students are not having an interesting discussion. The students were not having an interesting discussion. The students will not be having an interesting discussion. 6. The sun is not shining brightly. The sun was not shining brightly. The sun will not be shining brightly. 7. The workers are complaining about unsafe working conditions. The workers were complaining about unsafe working conditions. The workers will be complaining about unsafe working conditions. 8. The government is trying to protect consumers. The government was trying to protect consumers. The government will be trying to protect consumers.
29 Do students in your country have to stand when the teacher arrives? c) up
30 You hurry as we’ve still got twenty minutes before the film starts.
a) needn't
31 I you in the café at about 4.30 and we can discuss our plans then, OK? a) 'll see
32 I wanted to see Harry. How long ago ? a) did he leave
33 I wish Joe to Hawaii on holiday. They’re talking about an eruption there on the news. c) hadn't gone
34 Could I possibly some money for the bus fare home? I’ve lost my bag. b) borrow
35 People say that an avalanche by loud noises in the area but I don’t know if that’s true. a) is caused
36 You’ll have to drive much than this if you want to pass your test.
a) more carefully
37 I must remember Ed to take notes for me while I’m away next week. a) to ask
38 Look at the news! Three cars in a bad accident on the motorway at Dartford. b) have been involved
39 I for arriving so late but I was caught up in a traffic jam in the town centre. b) apologise
40 It was great to see you at the party. I didn’t realize how long since we last met. d) it had been
41 I’m sorry to trouble you but I was wondering what . b) the time was
42 I really wish people dump litter in front of our house. We have to clear it up every day. c) wouldn't
43 Last Tuesday the company told Ruth that they’d emailed her the job details the day. a) previous
44 The studio lights went out while the footballer . b) was being interviewed
45 By the time I hand in this project, I on it for three weeks! c) 'll have been working
46 Jonah’s just fallen down the steps outside and there’s everywhere. a) blood
47 You should be very proud what you’ve achieved over the last year. b) of
48 people know this but our school is being inspected today. d) Few
49 Look out for a petrol station because I think we’re going to run of petrol soon. a) out
50 If I’d gone to the sales yesterday, I one of those cheap bags before they sold out. d) could have bought
2. The scientist is developing a new source of energy. The scientist was developing a new source of energy. The scientist will be developing a new source of energy.
3. The engineers are working at the problem of using solar power. The engineers were working at the problem of using solar power. The engineers will be working at the problem of using solar power.
4. The people are not using poor methods of research. The people were not using poor methods of research. The people will not be using poor methods of research.
5. The students are not having an interesting discussion. The students were not having an interesting discussion. The students will not be having an interesting discussion.
6. The sun is not shining brightly. The sun was not shining brightly. The sun will not be shining brightly.
7. The workers are complaining about unsafe working conditions. The workers were complaining about unsafe working conditions. The workers will be complaining about unsafe working conditions.
8. The government is trying to protect consumers. The government was trying to protect consumers. The government will be trying to protect consumers.