____twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
| A．Examining | B．Examined | C．Being examined | D．Having been examined |
We invited her to dinner but she didn’t even bother to _______.
| A．turn in | B．turn up | C．turn on | D．turn down |
He could see the tall chimneys of the factory________.
| A．from distance | B．in distance | C．in the distance | D．to a distance |
________matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
It is the Chinese custom to ________ for family unions on Mid Autumn Day.
| A．starve | B．admire | C．gather | D．remember |
You ________ touch the chemical, or you ________ get burnt.
| A．can’t; will | B．mustn’t; will |
| C．may not; would | D．shouldn’t; should |