题目内容
It ____ Jack twenty minutes ____ the math problem yesterday.
A. took; to work out B. takes; worked out
C. has taken; work out D. is taking; working out
A
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题目内容
It ____ Jack twenty minutes ____ the math problem yesterday.
A. took; to work out B. takes; worked out
C. has taken; work out D. is taking; working out
A