This kind of CD-ROM is very popular. Why not buy one before it ?A．comes outB．is come out C．sells outD．is sold out 题目和参考答案——青夏教育精英家教网—

题目内容

This kind of CD-ROM is very popular. Why not buy one before it________ ?

A．comes out	B．is come out
C．sells out	D．is sold out

短语辨析。Come out 是出来，出现的意思。sell out 是卖完的意思，句意：这种光驱非常受欢迎。为什么不在它买完之前买一个？结合语境可知it是卖完的对象，故用被动语态，故选D

练习册系列答案

—What is your sister doing ,Tom?
—She at the mall. She every Sunday.

A．shops,goes shopping	B．is shopping ,goes shopping
C．is shopping, is shopping	D．goes shopping,goes shopping

We are looking forward to English .

--Jim is good basketball．---But he is weak in football.

Let’s ____ dinner together.

---Would you like _________ the Great Wall with us? ---Yes, of course.

─Let’s play soccer.
─That good.

——Who are you _______? —— My mother.

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