Though smoking is not allowed in the public places, many people are still in _______ habit of smoking in the train or bus in _______ public.
| A．the；the | B．/；/ |
| C．the；a | D．the；/ |
He spoke about the country as if he had been there, but ________ he had never.
| A．frequently | B．gradually | C．actually | D．finally |
This is the very reason ______ he gave for his coming late to the meeting.
| A．that | B．which | C．as | D．why |
Some children are too selfish today. They should be taught to _____things with others so that they will show concern for others.
| A．show | B．give | C．share | D．enjoy |
Some people would rather ride bicycles as bicycle riding has _____of the trouble of taking buses.
| A．nothing | B．none | C．some | D．neither |
--Do you have any trouble _____the work?
---No． in fact we have finished it already．
| A．finishing | B．to finish | C．finish | D．finished |