Trees in winter but in spring.
| A．not can be planted | B．can be planted |
| C．can’t be planted | D．can plant |
Those people without children ________good care of by the government there.
| A．are taking | B．are taken | C．have taken | D．were taking |
The world has a big headache and it _______ by money. It began in America last year.
| A．cause | B．causes | C．is caused | D．are caused |
In order to make Chongqing more beautiful, lots of trees _____ on both sides of the street.
| A．should build | B．have built | C．must be built | D．will build |
The river smells terrible. People_______ dirty things into it .
| A．must stop to throw |
| B．must stop from throwing |
| C．must be stopped to throw |
| D．must be stopped from throwing |
when you want to talk to your teacher ,you should _ _first.
| A．called to her | B．called up her |
| C．call her up | D．called her up |
The windows must _________ before you leave the room.
| A．be closed | B．are closed | C．close | D．be close |
— How clean and tidy your bedroom is!
—Thank you. It every day.
A. cleans B. is cleaned C. was cleaned
An official ___________ by some reporters on food problems in Shanghai yesterday.
| A．is interviewing | B．is interviewed |
| C．was interviewing | D．was interviewed |