题目内容
—Jane, have you finished yourpaper?
—No, I my sister with her homework all the morning.
—No, I my sister with her homework all the morning.
| A.help | B.have been helping | C.helped | D.was helping |
B
考查时态。根据句意及时间状语all the morning可知,我一直在帮助,故用现在完成进行时,选B。
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