What do you think this letter ______ mean?
A. must
B. mustn’t
C. can
D. can’t
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It _______ John. He has gone to Beijing.
A. must be
B. mustn’t be
C. can be
D. can’t be
They _______ 600 trees before last Thursday.
A. had planted
B. have planted
C. planted
D. were planting
We _______ about 2 thousand English words by the end of last term.
A. have learned
B. learned
C. had learned
D. were learning
My brother_______ while he ________ his bicycle .
A. fell, was riding
B. fell, were riding
C. had fallen, rode
D. falls, was riding
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