题目内容
—Will you please show me how to operate the new machine?
—Sure. It’s a piece of cake. Now let me tell you _____ to do first.
—Sure. It’s a piece of cake. Now let me tell you _____ to do first.
[ ]
A. what
B. how
C. whether
D. when
B. how
C. whether
D. when
A
练习册系列答案
相关题目