Question

You will see what great benefit the computers you own can be _____ every time we use them.

A． at

B．of

C．for

D．on

Answer 1

B

本題考查介詞。將從句what great benefit the computers you own can be變?yōu)檎�常語序應是the computers you own can be_____what great benefit。其意義是“你的電腦可能非常有用處”故用介詞of。
be of great benefit（ to）（對……）很有幫助。