To save class time,our teacher has_______students do half of the exercise in class and complete the other half for our homework.
The students asked me ____________ going to be held.
In the past month, cruel snowstorms hit some European countries and America ,great transportation problems in these countries.
______he has made up his mind, no one can make him change it.
—I’m going to the United States. —How long ______ you ______ in the United States?
Tom always prefers _________on foot rather than _______ a bike.