1)alaska's history began in 17412)it was first visited by vitus bering3)at the beginnig alaska was known as " russian america" нужно указать время и составить отрицательные и вопросительные предложения ​

1. ... five teachers at the party.   b)there will be 
2. what were you ... when I phoned you?    a)discussing  
3. I can help you now. I ...working.   b) am not 

correct the mistakes 
1. Does it often snow in winter?
2. I don`t know the boy. I have never met him.
3.i have cleaned my room for two hours.
4. she has been cooking lunch for an hour.
5. those girls  translated Part Two last Monday.
6. Natasha can`t go. She hasn`t finished her work yet.
7. They discussed everything two days ago.
8. he is not swimming.he is jumping now.
9.I think that he will be late tomorrow.
10. I have learned (или gave learnt) the new words  for ten o`clock. 

1) Write these questions so that they sound more polite: 
1. Where is the nearest post office? - Could you tell me, where the nearest post office is?
2. Is there a post office near here? - Could ypu tell me, if there is a post office near here?
3. How much is the post card? - Could you tell me,  how much the post card is?
4. Are there any welght limits for small packets? - Could you tell me, if there are any weight limits for small packets?
5. Do i have to pay extra for the stamp? - Could you tell me, whether I have to pay extra for the stamp?
6. Did you receive any letters for my name? - Could yo tell me, whether you received any letters for my name?