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

You will see what great benefit the computers you own can be every time we use them.
Aat
B. of
C. for
D. on

A. at(答案→)B. ofC. forD. on解析：本题考查介词。将从句what great benefit the computers you own can be变为正常语序应是the computers you own can be what great benefit。其意义是“你的电脑可能非常有用处”故用介词of。be of great benefit（ to）（对……）很有帮助。

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