He wrote a letter ___he explained what had happened in the accident.
| A．what | B．which |
| C．where | D．when |
It will not be he returns from abroad.
| A．before long | B．long before | C．after long | D．long after |
The suspect to the police that the hammar stillwhere he had it .
| A．lay;lay;lain | B．Lay;lied;laid | C．lied;lay;laid | D．lied;laid;lain |
Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver obey in this city.
| A．shall | B．can | C．need | D．might |
Try to spend your time just on the things you find .
| A．worthy doing them | B．worthy being done |
| C．worthy to being done | D．worthy of being done |
－How was Nadal’s cooking?
－Oh, _______. I was quite impressed.
| A．that’s OK | B．all right | C．pretty good | D．just so-so |