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题型：单选题题类：常考题难易度：普通

Be careful when you come _______ the street, because the traffic is very busy at the moment.

A、across B、behind C、between D、over

举一反三

The medicine kept the patient _______ for another month.

Yang Zhenning is one of {#blank#}1{#/blank#} (famous) scientists in China.

—Which do you like better, tea or coffee?

—I'd rather some water. It's also good for our health.

Tim began ________ the piano after dinner.

Did you forget to copy down these important instructions?

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