None of us expected the chairman to __________ at the party. We thought he was still in hospital.

A. turn into     B turn off         C turn down        D turn up

The problem in today's parenting environment is ____________ many believe it is their job to   solve all their children's problems.

Stay awake！You should know that it ________to sleep in class.

It is the           in this country to go out and pick flowers on the first day of the spring.

smoking is a bad habit. You should           it.

He lifted the receiver as soon as the telephone rang but        it on the table at once.

A. lay            B .lied            C laid             D lain

The beautiful stone _________ as much as 2.5 tons was placed in Mr. White’s garden last week.

After her son’s death, the old lady __________ sit at the window, deep in thought.

This is not an economical way to get more water; _________,it is very expensive.

________ he is well again, he can go on with his English study.