--I hear this kind of CD-ROM is very popular.--Let’s buy one before it ____________.
—What ________ they ________ last weekend?—They played computer games.
In order to find ________ better job,she planned to learn ________ second foreign language.
They ________ last weekend.
—What did you do after school yesterday?—I ________ basketball with my friends.
More and more people would like to go on vacation abroad(国外).They should remember to be ________ with good manners.A.visitorsB.playersC.volunteers