The government is _____ and will take the necessary steps to maintain security and stability.
| A．on the alert | B．out of control | C．on guard | D．in vain |
To avoid the car ______ the child, the driver had to make a sharp turn.
| A．to hit | B．hit | C．hitting | D．being hit |
He presents a new ________ to learning a foreign language, which I think is of great value.
| A．approach | B．means | C．method | D．way |
----Is this the first time you _____Chengdu ?
----No. But the first time I _____here, the city wasn't so beautiful.
| A．visited, came | B．visited, have come |
| C．have visited, have come | D．have visited, came |
I want very much to buy a car, but I can’t afford ________.
| A．one | B．it. | C．that | D．ones |
The computer system _____ suddenly while he was playing computer games.
| A．broke down | B．broke out | C．broke up | D．broke in |