1. 1) a
2) c
3) b
4) a
2. Правильно
3. 1 - d
2 - c
3 - b
4 - a
<span>1. Betty was drinking coffee while she (was waiting for) her friend.
2. How long have you ( lived/been living) in this town?
3. When my mother came home I (had already done) the housework.
4. If Simon ( arrives) in time we shall go for a walk.
5. Why are you so dirty? – I (have been work</span><span>ing) in the garden all morning.
6. Don’t phone her now. She (is study</span><span>ing).
7. You look busy. – I am. I (am writ</span><span>ing) a letter to my brother.
8. You sounded tired when I spoke to you last night. – Well, I (had been paint</span><span><span>ing</span>) the house all day.
9. Have you sent these letters yet? – Yes, I ( posted) them yesterday.
10. Are there any biscuits left? – Sorry, I (have eaten) them all.</span>
80.1
2 mine
3ours
4hers
5theirs
6yours
7mine
8his
80.2
2yours
3my///mine
4yours///mine
5her
6my///hers
7their
8ours
80.3
3of hers
4friends of theirs
5friend of mine
6friend of his
7friends of mine