---My mother is ill. ----_______ .
| A．Don't worry. | B．No hurry. |
| C．I'm sorry to hear that. | D．OK. |
----Shall we go to the amusement park this Sunday, mum?
---- Sure, ________ I am busy.
| A．unless | B．if |
| C．but | D．or |
This is the third time the famous scientist __________ the United States.
| A．has been to | B．has been in |
| C．has come to | D．has gone |
----Philip has gone to New Zealand．
----Oh，can you tell me________?
| A．when did he leave | B．when he is leaving |
| C．when he left | D．when is he leaving |
No one can achieve success __________ effort.
| A．beyond | B．with |
| C．without | D．beside |
----Drugs have done great harm to some people and their families.
----Quite true, so we should ________ them.
| A．keep away from | B．look down on |
| C．get on with | D．take care of |