I tried every to make him give up smoking.
The workers are busy with the repairs of the temple,which is ______.
—The bedroom is too dirty.______ we clean it?—Of course.
We can’t ______ the car.There ______ something wrong with the engine.
Jane told me she would not attend the conference ______.
Without facts,we cannot form a worthwhile opinion,for we need to have factual knowledge ______ our thinking.