His letter is full of mistakes

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11. His letter is full of mistakes. He
A. must have checked
could have checked
C.
12. "I bought two bottles of milk." "You
house."
A. couldn't
13. When I first went to England, I
A. can read; can't speak
C. could read; couldn't speak
14. The car plunged into the river. The driver
A. is able to get
B. could get
15.1
17. You
B. needn't
got lost and
A. may not
A. have to
B. must have to
16. We have some days off after the exam
A. Let
B. Shall I
the mistakes carefully before sending it.
B. s should have checked
ring the bell; I have a key.
B. needn't
D. can have checked
have bought milk, we have heaps of it in the
C.mustn't
English, but I
ask a policeman
B. can read; couldn't speak
D. could read; can't speak
out but the passengers were drowned.
C. was able to get D. can get
the way.
C. had to
spend some time together?
C. Shall we
D. hadn't
C.mustn't
D. would
D. Would you like
D. couldn't