At no time will China be the first nation ______ nuclear weapons.
A. used
B. which used
C. using
D. to use
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I haven't ______ to answering all my friends' letters yet.
A. gone round
B. come round
C. got round
D. walked round
The boy is growing ______ his mother.
A. off
B. up into
C. beyond
D. out of
She ______ watched the film with her friends yesterday evening, but she was busy to go with them.
A. should have
B. had
C. must have
D. has
A student can buy a plane ticket at a ______ fare from this airline company.
A. reduced
B. diminished
C. lessened
D. decreased
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