It’s time that you __________ the whole book.

The housework is ____ easy. You don’t have to spend (花费) _______ time on it.

Kate often goes to work ______ breakfast. – It’s bad for her health.

uncertain side effect the medicine will bring about, although about two thousand patients have taken it．

el it necessary that everything by the time our manager arrives.— Yes, to make sure the conference is held on schedule.