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 |
When I was a child, I ______ watch TV whenever I wanted to.
| A．should | B．could | C．must | D．need |
She says that she’ll have to close the shop ________ business improves.
| A．if | B．unless | C．after | D．when |
Mother always complains that children _______ their shoes very quickly.
| A．find out | B．wash out | C．wear out | D．set out |
There are a small number of people involved, possibly ______twenty.
| A．as few as | B．as little as | C．as many as | D．as much as |
Only when he apologizes for his rudeness ____to him again.
| A．I will speak. | B．will I speak. | C．do I speak. | D．I speak. |