--If you have any trouble, be sure to call me.
–__________________.
| A．I am glad to hear that. | B．I will. Thank you very much. |
| C．I have no trouble. | D．I will think it over. |
____________ they are brothers, they look like each other.
| A．Because | B．Though | C．When | D．So |
He is ________ to make money to help his parents live a better life.
| A．old enough | B．enough old | C．young enough | D．enough young |
---Andy, you were the only person that was late for the meeting, why?
---Sorry, sir. But I really had a __________ time finding the meeting hall.
| A．enjoyable | B．funny | C．difficult | D．pleasant |
—Will people live to be 200 years old? —____________.
| A．No, they aren’t. | B．No, they won’t. | C．No, they don’t. | D．No, they can’t. |
--- Look at ______ book on the desk . Is it ______ useful one ?
--Yes, it is . In the book there is much advice on how to learn math well.
| A．a, the | B．the, a | C．the, an | D．a, an |