Every boy and every girl ______ that each day and each hour brings ______ duty.

A．know；their B．knows；their

C．knows；its D．know；its

That’s _______ book I want.

A. very the　　 B. right the　　 C. just the　　　 D. the just

Everybody showed great respect to the old doctor, who devoted everything he had to _____ the poor conditions of the local hospital.

　　 A. improving　 　　B. improve 　　　　 C. to improve 　　　 D. being improved

Once a decision has been made，all of us should 　　　 it.?

A.direct to　　　　　　 B.stick to?　　　　 C.lead to　　　　　 D.refer to

Why don’t you bring 　　　 to his attention that you are to ill to go on working?

A．One　 　　 B．it　 　　　 C．that 　　　 D．this

The question is very important. It really needs _______.

　 A. carefully discussing 　 B. carefully to discuss

　 C. to carefully be discussed 　 D. being discussed carefully

The price of apples is about four yuan per kg _____ average.

A. on 　 B. at　　 C. in 　 D. from

I think you’ve got to the point ___ a change is needed, otherwise you’ll fail.

A. when     B. that     C. where    D. which

You can drop in on me________your convenience.

A．of B．in C．a(chǎn)t D．for

—Is this hotel　　 are going to stay?

　 —Yes, it is.

　 A．where　　　 B．which　　　 C．in that　　 D．in which