You can only be sure of __________ you have at present; you cannot be sure of something __________ you might get in the future.

English _____in many countries, but Chinese _____their own language.

The teacher asked the two students todiscuss the question in a low voice______ they should bother the others.

I’m exhausted. I _____ on a project day and night.– You’d better have several days off after finishingit. Otherwise you might break down.

Mum, I plan to work in a restaurant to get some work experience during the vacation.— I ______ your decision, for it is good for you.