单项选择题
As it turned out to be a problem of no importance, we______ so much time looking into it.
A.needn't spend
B.didn't have to spend
C.oughtn't to spend
D.needn't have spent
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单项选择题
—He is______ a brave man.—We can't admire his courage ______.
A.actually; very much
B.indeed; too a lot
C.really; too much
D.truly; a bit
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单项选择题
If Tim keeps working like this, he'll ______ sooner or later.
A.break down
B.give off
C.get down
D.hold on
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