Ladies and gentlemen, please remain ________ until the plane has come to a complete stop．
| A．seated | B．seating | C．to seat | D．seat |
The dog, if trained ____, will be made a good watch-dog one day．
| A．properly | B．hopefully | C．personally | D．usually |
The one and only thing I ____ is whether you take a good rest！
| A．care for | B．look for | C．care about | D．look after |
－He asked Tom, “Have you finished your homework？”
－He asked Tom .
| A．if had he finished his homework. |
| B．whether he had finished his homework |
| C．if he had finished your homework. |
| D．if you had finished your homework. |
The reason being late for the meeting was his little son fell in this morning.
| A．for; that | B．why; that | C．for; because | D．why; because |
At the age of eight, he ___a group of child dancers.
| A．joined in | B．attended | C．took part in | D．joined |