25. ―Look! What a mistake! Why?
―Sorry, I _________ on it.
| A．don’t concentrate | B．hadn’t concentrated |
| C．haven’t been concentrating | D．wasn’t concentrating |
Shortly after the serious accident two_______ policemen were sent to the spot to keep order.
| A．score of | B．scores | C．dozens | D．scores of |
The police have ____ power to deal with such matters by ____ law．
| A．the; the | B．不填；不填 |
| C．不填；the | D．the; 不填 |
It took her a long time to ______ living abroad.
| A．meet with | B．test out |
| C．adjust to | D．sit around |
He suddenly fell ill, ______ prevented him from attending his friend’s wedding.
| A．why | B．what | C．that | D．which |
Since his retirement, walking the dog after supper has become part of his daily ______.
| A．tradition | B．routine |
| C．destination | D．revolution |