题目内容
—Has William finished writing his graduation paper yet??
—I don’t know exactly,but he __________all day.?
—I don’t know exactly,but he __________all day.?
| A.is writing | B.has been writing? |
| C.was writing | D.wrote |
B?
表示“一整天都在做某事(此时该动作还没有结束)”要用现在完成进行时。?
练习册系列答案
相关题目