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问题: 英语作业?

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Must he have said so the day before yesterday
I will like to go swimming with you this afternoon.
A: Must I go? B: No, you mustn't.
He used to calling on me on Sundays

解答:

Has he said so the day before yesterday
I like to go swimming with you this afternoon.
A: Must I go? B: No, you needn't.
He used to call on me on Sundays