Mingming will have a class meeting _______ 3:30 this afternoon.
on
in
at
The price of houses increases very fast now, because more _____ want to buy them.
—Could you tell me ______? —Usually one hour and a half.
—I’m afraid I’ve got a bad cold. —________________.
—We will build a subway in our city before 2012. —Wow, __________! Will it pass our place?
During the mourning period(悼念期)flags are __________at half-mast, all public amusement will be stopped.