If we had taken such effective measures much earlier, the river so seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |
It’s difficult to ______ the football fans, who were crazy about the victory.
| A．put down | B．turn down |
| C．calm down | D．get down |
All these foods and clothes must be sent out immediately ______ in time for those who were caught in floods.
| A．in order to have received | B．in order to receive |
| C．so as to be receiving | D．so as to be received |
She ______ to Africa to study the animals there, even though her family asked her not to.
| A．insisted on going | B．insisted going |
| C．insisted in going | D．insisted to go |
— Could I ask you a personal question?
— Sure, ______.
| A．pardon me | B．go ahead |
| C．good idea | D．forget it |
—I’m going to Thailand this summer holiday.
—
| A．Take care! | B．Write to me. |
| C．Have a nice trip! | D．When will you come back? |