-If you have any trouble, be sure to call me. -______________.
| A．I will think it over. | B．I have no trouble. |
| C．I am glad to hear that. | D．I will. Thank you. |
She always does very well in the English exams. But she can _____understand English radio programs.
| A．always | B．hardly | C．already | D．easily |
There are lots of restaurants in our town. And most of _____are clean and cheap.
| A．it | B．they | C．us | D．them |
—Thanks for taking my friends and me out tonight.
—_________.
| A．Don’t worry | B．You are welcome |
| C．That’s a good idea | D．I’m afraid not |
Learning to write is learning to think. You don’t know things clearly _______ you can write them down.
| A．unless | B．if | C．since | D．whether |
I thought the actor was famous, _________ none of my friends has ever heard of him.
| A．and | B．or | C．so | D．but |