_____ you have learned one foreign language, you will find it quite easy to learn another.
| A．Once | B．Before | C．Though | D．Because |
“You are too selfish. It’s high time you that you are not the most important person in the world.” Peter said to his boss angrily.
| A．realized | B．realize | C．will realize | D．have realized |
Apart from the urgent problems caused by wars and conflicts， the UN helps countries with other problems such as education， starvation， disasters， AIDs and other diseases.
| A．lack for | B．lack in |
| C．lack | D．lack of |
The breaking of a taboo is usually upsetting or embarrassing for the person____ and the people around him or her.
| A．to concern | B．concerning |
| C． concerned | D．concern |
Thanks to the work of UNICEF. Otherwise many children the chance of living a good life.
| A．will not have | B．have not had |
| C．do not have | D．would not have |
The manager， it clear to us that he didn’t agree with us， left the meeting room.
| A．who has made | B．having made | C．made | D．making |