Water is becoming less and less. All of us should ______ it.
| A．play a part in saving | B．plays a part in saving |
| C．take a part in saving | D．takes a part in saving |
His father is engineer. He designed such useful machine
| A．a an | B．an a | C．an an | D．a a |
—Who is speaking there?
—It be Uncle Li. He has gone to Shanghai.
| A．must | B．can’t | C．might | D．should |
— Amy’s library book is lost?
—She has to pay for it.
| A．In the end | B．What if | C．Instead of | D．Why not |
There is plenty of snow outside. Put on your sweater. It is cold today.
| A．too much | B．too many | C．much too | D．many too |
It is too noisy. I can hear what Mr. Wang is saying.
| A．easily | B．hardly | C．clearly | D．exactly |