问题描述:
____Have you fed the sheep on grass?
__Have you fed the sheep on grass?
__Oh,I____all about it.
A forgot B have forgotten C am forgetting D forget
为什么不选B?第一句问话不是用的现在完成式吗?
__Have you fed the sheep on grass?
__Oh,I____all about it.
A forgot B have forgotten C am forgetting D forget
为什么不选B?第一句问话不是用的现在完成式吗?
问题解答:
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