31- He wishes he ___________________ (can) learn English well.
32- They ____________________ (watch) a soccer match since three o’clock.
33- Mr. Green always __________________(go) to work by bus last year.
34- Why did the sale of jeans stop ___________________ (grow)?
35- They ___________________ (have) lunch in the cafeteria now.
36- Experiments on animals should ___________________(stop).
37- I wish my parents ____________________ (be) here now.
38- They _____________________ (not go) to the movies last Sunday.
39- Wearing uniforms helps students ____________________ (feel) equal in many ways.
40- Jeans ______________________ (sell) all over the world.
41- She is fond of ___________________ (play) football.
42- Flowers should ___________________ (keep) in warm places.
43-They ____________________ (give) me the letter a few minutes ago.
44- My father _____________________ (watch) TV while my mother was cooking in the kitchen.
45- Miss White ______________________(already / see) Giac Lam pagoda.
46- Malaysia ______________________ (divide) into two regions.
47-This exercise must ____________________(do) carefully.
48- Rice ____________________(grow) in tropical countries.
49- More people started ___________________ (wear) jeans because they became cheaper.
50- Let me _______________ (introduce) myself
1 could
2 have watched
3 went
4 growing
5 are having
6 be stopped
7 were
8 didn't go
9 feel
10 are sold
11 playing
12 be kept
13 gave
14 was watching
15 has already seen
16 is divided
17 be done
18 is grown
19 wearing
50 intruduce
