--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 |
相关试题
–Where is Mr.Smith?
--He isn’t here. He ______ to England.
| A．has been | B．has gone | C．went | D．goes |
—Have you seenbook on the desk?
—Is itEnglish book? I saw it just now.
| A．the; / | B．/; the | C．the, an | D．a; / |
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