题目内容
The problem is quit difficult for him.He can’t ________.
[ ]
A.work on it
B.work out it
C.work it on
D.work it out
答案:D
练习册系列答案
相关题目
题目内容
The problem is quit difficult for him.He can’t ________.
A.work on it
B.work out it
C.work it on
D.work it out