—Remember________the door when you leave the room．
—OK，I will．
| A．to lock |
| B．locking |
| C．lock |
| D．locked |
I don’t doubt ____________ he will come.
| A．whether | B．that | C．if | D．so |
David has brain. In fact, I don’t think that anyone in the class has _____________ IQ.
| A．a high | B．a higher |
| C．the higher | D．the highest |
--What about travelling during the summer holidays?
--- _____________ It can relax us and open our eyes.
A. Why not?
B. What for?
C. I think so.
---Must I finish the homework now?
---No, you ________. You can do it after dinner.
A. can’t B. needn’t C. mustn’t
Jin Yong is one of the _____________ and _____________ writers in China.
A. greater, older
B. greater, oldest
C. greatest, oldest