这一题怎么写has sam finished his homework today?这一题怎么写has sam finished his homework today?yes he ___it this morning,a,did b,has done c.was doing d.had done 请讲出理由谢谢 ????
问题描述:
这一题怎么写has sam finished his homework today?
这一题怎么写has sam finished his homework today?
yes he ___it this morning,
a,did b,has done c.was doing d.had done
请讲出理由谢谢 ????
答