11the exhibition _ for a full week by the time it ends.Amust have lastedBwill have lastedCwoud lastD has lasted
题目
11the exhibition _ for a full week by the time it ends.Amust have lastedBwill have lastedCwoud last
D has lasted
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参考答案和解析
B
by the time it ends 是到他结束为止，是一个持续的过程，所以用will、would 是 will 的过去式(可用在过去将来时:would+动词原形)