．People have planted a lot of trees and grass in order to ____ wind and sand in the desert．
| A．hold down | B．hold up | C．hold back | D．hold out |
Everybody likes to work with is reliable and easy to get along with.
| A．who | B．whom | C．whomever | D．whoever |
—How about party?
—Cool! It was really great fun! Pity you weren’t there.
| A．a; a | B．the; a | C．the; 不填 | D．a; 不填 |
All the students are seated in the classroom, actually good at their study, listening attentively.
A．most of whom |
B．most of who | C．most of them | D．most of which |
Thanks to Mrs Black, the father and the son eventually after ten year’s cold relationship between them.
| A．took up | B．made up | C．picked up | D．turned up |
—I came all the way to inform you of the time and place of the meeting.
—You could have yourself the trouble by calling me.
| A．spared | B．share d |
C．cost | D．removed |