问题描述:
---I saw Dave in the lift this morning.--Really He()around here for a long time.
A:won't be seen B:wasn't seen C:hasn't been seen D:hadn't been seen为什么选D而不选其他选项
A:won't be seen B:wasn't seen C:hasn't been seen D:hadn't been seen为什么选D而不选其他选项
问题解答:
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