Ex 2. Put the special questions.
0. He has been using my computer for 10 minutes. / Who has been using my computer for 10 minutes?
1. I have been waiting for you for more than an hour. 2. She has been reading since 3 o'clock. 3. I have been writing these sentences for an hour. 4. Mary has been watching TV since I returned. 5. They have been discussing this problem since 8 o'clock. 6. My sister has been playing the piano for half an hour. 7. It has been snowing since morning. 8. Somebody has been using my computer for 15 minutes, 9. The boys have been playing football. 10. He has been sleeping for more than two hours now.
First of all, I have to notice that this tiny insect can bring you a lot of inconveniences.
It can make a terrible noise. Which is very annoying.
Some people try to kill gnat when they hear this noise. Well, only agile person can do it.
because, it's very complicated to catch it. Moreover it's very bad. If you try to kill gnat, imagine that you are a gnat. And someone tryes to kill YOU. I consider that you stop doing it.
To conclude I'd like to say, that it's very complicate to say that gnat is my favourite insect, but I feel a pity to gnats.