What courses are you going to do next term?—I don’t know. But it’s about time ________ on something.

The police have said that this situation _________ as soon as possible.

Listen! Is Mary singing in the next room—No. It _______ be Mary．She has gone to Shanghai for an important meeting.

The writing was not _____, so we could not read it at all.

Where are you going, Maria—I’m going to ______the English corner. Would you like to _____ me—I’m afraid I can’t.