I can’t open this lock.There must be _____ key that will open it.
A. some
B. any
C. all
D. each
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The population of China is larger than____ of America.
A. this
B. these
C. those
D. that
It is said that he has killed more than ___________ people.
A. three hundreds
B. three hundreds’
C. three hundred’s
D. three hundred
I ordered that the books _____ at once.
A. would be sent
B. would send
C. be sent
D. send
If he_____ his energe to the work, he would have been sucessful.
A. has put
B. put
C. had put
D. was putting
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