—Must we keep the window _______ all the time?
—No, you don’t have to.
| A．opening | B．opened |
| C．to open | D．open |
I’m ________ to reach the top of the tree.
| A．short enough | B．enough short | C．tall enough | D．enough tall |
There are so many kinds of Mp4 in the shop. We can’t decide .
| A．to buy what | B．what to buy | C．to buy which | D．which to buy |
--- Do you know when hetomorrow?
--- Don’t worry. I think as soon as he, he will give you a call.
| A．will come; will come | B．will come; comes |
| C．comes; will come | D．comes; comes |
--- Jim tookone-hour ride just now. What a short time he spent finishing such a long way!
--- He is _____experienced rider.
| A．an; the | B．an; a | C．a ;an | D．a; the |
- -I’m going to have a trip to Window of the World. ---_________.
| A．Goodbye. | B．Enjoy yourself. |
| C．I’m sorry to hear that. | D．Help yourself. |