John _____ knowledge of radio just by staying around the radio station.
| A．caught on | B．worked up | C．took up | D．picked up |
The room he has just rent is about 9 meters length and 3 meters wide．
| A．in | B．on | C．to | D．at |
－The fire in the supermarket last night was terrible !
—They have taken some measures to prevent it occurring．
| A．must | B．will | C．would | D．should |
Tom's worry is he won't be chosen for the school football team．
| A．that | B．whether | C．when | D．why |
The children's excitement as Christmas drew near．
| A．grows | B．tried | C．trying | D．had grown |
During the weekend, the health club is usually full of people to get in shape
| A．try | B．grew |
| C．trying | D．having tried |