问题
选择题
--I hear this kind of CD-ROM is very popular.
--Let’s buy one before it ____________.
A．is come out
B．comes out
C．sells out
D．is sold out
答案
答案：D
本题考查动词短语。sell out卖光，不用被动语态。
搜题请搜索小程序“爱下问搜题”
--I hear this kind of CD-ROM is very popular.
--Let’s buy one before it ____________.
A．is come out
B．comes out
C．sells out
D．is sold out
答案：D
本题考查动词短语。sell out卖光，不用被动语态。