________ caused the accident is still a complete mystery.
| A．What | B．That | C．How | D．Where |
He has a lot of things to do and has no time to ______.
| A．sit up | B．sit around | C．sit down | D．turn around |
He tried to work in the government in order to get _______ to the useful information.
| A．key | B．way | C．access | D．discovery |
- John and I will celebrate our forties wedding anniversary next month.
- Oh, _________ !
| A．cheer up | B．well done | C．go ahead | D．congratulations |
Our society insists on regular habits, timekeeping and punctuality, and whether we like it or not, ______ we mean to make our way in society, we have to comply ( to act in accordance with a demand, rule, etc.) its demands.
| A．whether | B．after | C．if | D．until |
The subway was crowded with passengers going home from market, most of ________ carrying heavy bags and baskets full of fruit and vegetables they had bought there.
| A．whom | B．them | C．who | D．which |