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题型：单选题题类：常考题难易度：普通

牛津上海(本地版)五四制初中英语九年级上册Module 1 Unit 4 Computers同步练习1

The doctor spent the whole morning ______________ the patient.

A、operating on B、operate on C、to operate on D、operating

举一反三

Can you see the boys football on the playground? They are my classmates.

—How does Jack usually go to work?
— He ___ drive car, but now he ___ there to lose weight.

What is the way of _____________ animals?

The number of people invited ________ fifty, but a number of them ________ absent for different reasons.

树木会分泌某种化学物质使树叶难吃，从而保护自己。（produce)

Who have you invited {#blank#}1{#/blank#} your house for your birthday party? (填入一个适当的介词)

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