______________ twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city.
| A．Examining | B．Examined |
| C．Having been examined | D．Being examined |
Without proper lessons, you could ____ a lot of bad habits when playing the piano.
| A．give up | B．catch up | C．keep up | D．pick up |
You’d better fly somewhere in the west. Then you can ____ a hire car and travel around.
| A．take up | B．get on | C．pick up | D．turn on |
John _____ knowledge of radio just by staying around the radio station.
| A．caught on | B．worked up | C．took up | D．picked up |
It is sleeping late in the morning that _____ being late for work.
| A．devotes to | B．sticks to | C．refers to | D．leads to |
Firemen said the fire wasunder control, but they warned that the change in the weather might______new fires.
| A．lead to | B．bring in | C．result from | D．break out |