单项选择题

--You’ve done this before, right
--No, but if we follow the directions, we ______ have any trouble.

[A] needn’t
B. mustn’t
C. shouldn’t
D. couldn’t
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Mr. Grey has two sons ______ are famous writers.
[A] they both [B] both of whom
[C] both of them [D] both they
单项选择题
Do you enjoy listening to records I find records are often ______ or better than an actual performance.
A. as good as
B. as good
C. as well as
D. good as
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