问题

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

正确答案是：

标签： cd , kind , rom

同类题型

Our teacher entered the classroom, __________.

I afraid of the dark, but now I don’t.

A story goes ______ Elizabeth I of England liked nothing more than being surrounded by clever and qualified noblemen at court.

must I take this medicine every day? —Three times a day. [ ]

The weather in Hong Kong is quite different from __________ in Beijing.