20
1.the heaviest
2.longer
3.the hottest
4.bigger
5.the littlest
6.more populated
21
1.more enjoyable
2.the most attractive
3.friendly
4.messiest
5.the worst
6.more painful
7.faster
8.polite
1. came, had cooked
2 returned,had done
3 entered ,had opened
4 gave, had bought
5 showed, had drawn
6. gave, had brought
7. saw, hadn't washed
8. understood, didn't do
9. knew, didn't come
10. returned
11.had retuned
12. finished
13.had finished
14 thought. lost
15.told , saw
16.woke up, had gone
17 thought, didn't come
18 told, cooked
19 found, lost
20 came,had left
Usually, in the morning I eat bread and butter, and drink a cup of tea.
1) I go to Shanghai next summer.
2) I am send him a telegram.
3) My mother is reading a book now.
4) Don’t disturb me in the evening, I’ for exam.
5) You will have been playing