—What do you think they are in praise of?

—　　　　　 .

A.      For Tom to win the first prize

B.      Tom’s winning the first prize

C.      Tom won the first prize

D.      Because Tom won the first prize

He________ me by saying “Good morning”

A. introduced　　　　　　 B, greeted　　　　　 C. met　　　　　　　 D.saw

Being a parent is not always easy, and being the parent of a child with special needs often carries with ________ extra stress.

A. it　 　　　 B. them　 　　　C. one　 　　D. him　

These computers are different from ________.

A. that we expected

B. what we expected

C. which we have expected

D. what we expect

You say he works very hard, _____ and ______.

　 A. so does he, so do you 　 B. so does he, so you do

　 C. so he does, so do you 　 D. so he does, so you do

It was she that  ______ a sharp whistle, which makes possible for us to catch the thief.

A. gave off; this      B. gave out; that　　 C. gave; it            D. sent out; them

The new machines will work faster, thus ________ our costs.

A．they reduce　　 B．reducing　

C．to reduce　　 D．having reduced