题目内容
He says all _______ tried their best and that all that can be done _______ been done.
A. has, has B. have, have C. have, has D. has, have
C
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题目内容
He says all _______ tried their best and that all that can be done _______ been done.
A. has, has B. have, have C. have, has D. has, have
C