问题标题:
Perer(do)hishomeworkatseveno'clock
问题描述:
Perer(do)hishomeworkatseveno'clock
宋娜回答:
Pererisdoinghishomeworkatseveno'clock.
因为后边有具体时间点atseveno'clock
所以用现在进行时(bedoing)
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