– Look at these factories. I hate them. They____ many rivers here.
--Yes. Something ______ to stop the pollution.
| A．polluted, must do | B．had polluted , must be doing |
| C．have polluted , must be done | D．were polluting, must be done |
—I’m going to Hainan with my aunt for my holiday after the exam.
—_______.
| A．Have a good time | B．It doesn’t matter |
| C．You are welcome | D．Thanks a lot |
—What do you think of Liu Huan?
—Oh, he is my favorite singer. I think no one can sing________.
| A．good | B．well | C．better | D．best |
Everybody should remember it is not _________ to swim in the river alone．
| A．healthy | B．safe | C．possible | D．comfortable |
Some students are so ______ that they often make mistakes in their homework.
| A．careful | B．serious | C．careless | D．successful |
It’s about 5 away from here to the mountain.
| A．hundred meters | B．hundreds meter |
| C．hundreds meters | D．hundred meter |