There was a _______look on his face when he met with the______problem.
| A．confusing；confusing | B．confused；confused |
| C．confusing；confused | D．confused；confusing |
——Let’s go and have a good drink tonight.
——__________. Have you got the first prize in the competition?
| A．What for? | B．Thanks a lot. | C．Yes. I’d like to | D．Why not? |
Usually an adult man can grow about 1.7 meters tall, _____ a few may grow as short as 1.3 meters.
| A．while | B．or | C．for | D．so |
The illness of her son is so ______ that she cannot go to sleep at night.
| A．satisfying | B．worrying | C．surprising | D．puzzling |
_______ you work hard, you won’t solve this problem.
| A．Even | B．As | C．Unless | D．Since |
My uncle _____ in Taiwan for 20 years. Now he has settled down in mainland.
| A．lived | B．had lived | C．has lived | D．was living |