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_____ when to leave, I could only stay at home, _____ nothing.
| A．Knowing not; done | B．Not having known; doing |
| C．Having not known; done | D．Not knowing; doing |
We should not________and laugh at those who have no homes to shelter from the rain and wind.Instead，we should be sympathetic of them.
| A．look forward to | B．think highly of |
| C．pay attention to | D．look down upon |
When you stand on the top of the mountain and overlook the surrounding scenery，you’ll find it is________to climb it up with effort.
| A．worth | B．worthy |
| C．possible | D．worthwhile |
Each time I________a good essay when reading newspapers，I cut it out and keep it.
| A．work out | B．come across |
| C．care about | D．put down |
To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment.
| A．connection | B．appointment |
| C．reference | D．exploration |
According to the arrangement，the athletes of our school________at the gym for two hours every day.
| A．work out | B．carry out |
| C．take in | D．set aside |