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题型：单选题题类：常考题难易度：困难

Mr. Wang made up his mind to devote all he could _____ his oral English before going abroad.

A、improve B、to improve　　 C、improving D、to improving

举一反三

You shouldn't let your children r{#blank#}1{#/blank#}(漫游) the streets.

It's just {#blank#}1{#/blank#}(典型的) of Jack to spend much of his time on the experiment and then lose interest half way.

Who would you rather have d{#blank#}1{#/blank#}(设计) the magazine?

"Chinese dama", a group mainly _____ of married women between 40 and 60, _____ the attention of the public for the first time in 2013.

Do you want the soup before the salad or {#blank#}1{#/blank#} versa?

We suggest you (should) switch {#blank#}1{#/blank#}your mobile phone before boarding.

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