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【单选题】
I didn't hear clearly ____ because it was very noisy. [ ]A.
what did you say
B.
what you said
C.
what you say
D.
what do you say
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举一反三
【单选题】Working hard is not only a of great success,but it is among the essential requirements. [ ]
A.
sign
B.
signal
C.
guarantee
D.
proof
【单选题】Working hard is not only a _____ of great success, but it is among the essential requirement.
A.
sign
B.
singal
C.
guarantee
D.
expectation