This kind of CD-ROM is very popular. Why not buy one before it___________?A. comes out B is come out C. is sold out D. sells out
In my pencilbox, ______ a pen, two pencils and three rulers.
Look! These clips _______ your favourite T-shirt.
-- What can I do for you, Madam? --I’d like ________.
We all hope you hard every day.
-- This term I want to be the top student in my class. --_________.