单项选择题

The students have no difficulty ______ the exercise.

A．in doing
B．to do
C．with
D．doing
<上一题 目录 下一题>
热门 试题

单项选择题
There were ______ magazines in the convenience store.
A．none
B．any
C．single
D．no
单项选择题
When I was a child I ______ go swimming in the lake.
A．used to
B．am used to
C．use to
D．was used
相关试题