题目内容
The pupils _______ doing their exercises in the classroom now by their teacher.
[ ]
A.have kept busy
B.are busy
C.are keeping busy
D.are being kept busy
答案:D
解析:
解析:
|
keep sb.doing sth. 表示“使某人忙于……”,其被动语态则为be kept busy doing sth. 题目意在强调学生目前正在“使……做作业,”故用现在进行时的被动态。 |
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