题目内容

_______________the library for hours without finding anything useful, I tumned to my professor for help.（2017年12月第28题）

A. To search
B. Have searched
C. Having searched
D. Searching

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Our online computer repair and tech support is a convenient way to have your computer ____________ without having to leave your home.（2017年12月第30题）

A. to fix
B. fixing
C. fix
D. fixed

I had to wait for another two months to be able to have the car ______________.（2017年6月第25题）

A. fixing
B. fix
C. to fix
D. fixed

It was not until last July _____________ we started to distribute e-readers and launched an e-book store.（2017年12月第27题）

A. that
B. who
C. which
D. whom

This store doesn ' t sell fumiture, but the one across the street_______________.（2016年12月第22题）

A. is
B. will be
C. do
D. does