The movie star didn’t _________ until the crazy fans had waited for almost two hours.
| A．look up | B．hold up | C．turn up | D．put up |
. ---I’d like to buy an expensive camera.
---Well, we have several models _______ .
| A．to choose from | B．to choose | C．to be chosen | D．for choice |
. _______ to the left and you’ll see the post office.
| A．To turn | B．Turning | C．Turned | D．Turn |
. Will you be able to attend the lecturenext week?
| A．giving | B．given | C．to be given | D．being given |
.An exhibition of paintings ____ at the museum next week.
| A．are to be held | B．is to be held |
| C．are holding | D．will hold |
Every possible means ____, but none ____ successful．
| A．has tried; has proved | B．tried; proves |
| C．has been tried; proves | D．is being tried; is proved |