3. Your teacher writes poems and stories,............. she? (don’t/won’t/didn’t/doesn’t)
4. The car............ she has just bought is very modern( which/that/X/all are correct)
5. My father has to go to work............. it is raining hard.( although/but/because/and)
6. She doesn’t know the man....... sent her this letter.( which/who/whom/whose)
7. If you press that button, the alarm............ (will ring/ringing/ring/would ring)
16…............ air is one of the many problems we have to solve.(pure/polluted/dust/pleasant)
17. We haven't met since we................... school. ( left/leave/have left/had left)
18. Where........................ you go if you have a car ?( would/have/will/did)
19. Her family is aware of saving............. (energy/energize/energetic/energetically)
20. I think we should use public transport instead........ motorbikes( by/with/of/for)