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题型：单选题题类：常考题难易度：普通

_____ is necessary for us _____ read good books.

A、It, to B、That, to C、It, \

举一反三

I used to early,but now I am used to late.

There are a small number of people involved, possibly_______ ten.

从方框中选择适当的短语，并用其正确形式填空。

be careful of pass on can be clean up look after

People built these{#blank#}1{#/blank#}(塔)many years ago.

You need{#blank#}1{#/blank#}(water) them once a day.

Chocolate is good for us. (改为反义句)

Chocolate {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} us.

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