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题型：单选题题类：真题难易度：容易

There quite a lot of trees on the hill.

A、were used to being B、had C、used to have D、used to be

举一反三

A good listener must asking questions.

Our hometown, Longyan, ____ its beautiful nature and fresh air.

Some children are reading; ________ are writing.

The old lady used to ________ in the park.

这个新产品是用来快速加热食物的。

This new product{#blank#}1{#/blank#} heating food quickly.

I've only used this bike for a c {#blank#}1{#/blank#} of weeks, but I like it.

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