What tense is it?
1. If the temperature falls down, you’ll put on your warm sweater.
2. Nobody came to the party, because Ann hadn’t posted the invitation cards.
3. I haven’t seen John today. Where is he?
4. We will have become students by the next year.
5. She is baking a cake, that’s why her hands are dirty.
6. Pete was playing hockey at 7 o’clock yesterday.
7. At 9 o’clock tomorrow he will be working at the library.
8. It is 5 o’clock. I have been writing my composition for two hours.
9. At 5 o’clock I understood that I had been writing my composition for 2 hours already.
10. By 5 o’clock I will have been writing my composition for 2 hours.
