If there is a mechanical problem, we suggest ______ the manufacturer directly.

My shoes are dirty. I’d better take them ________before I come in.

We decided not to go out for meal _________ we were too tired.

The children like to put ___________ nice clothes when they go out.

Mary’s eyes are weak, __________, she has to wear glasses.

Please turn __________ the gas. I want to cook my lunch.

Who is going to __________ your children when you’re at work?

If you want to save money, you should ________the amount of water your family use

I like bananas, __________my brother doesn’t.

What _____ of learning English do you find most difficult? Is it grammar rules or speaking?

Of course as a student I want _____ all the exams.

My sister hair isn't _______

Do you happen to know the name of the _____?

Our energy will soon come to an end if we don’t__________ it.

I think we can practice our listening and speaking skills by _____ .