In order to make our city green, _________.
| A．it is necessary to have planted many trees | B．many more trees need to plant |
| C．we must plant more trees | D．our city needs more trees |
After a heated discussion at the meeting, a new plan came ______ being, which would have a great effect ______ the culture life of the people.
| A．into; for | B．to; to | C．from; at | D．into; on |
It is usually warm in my hometown in March, but it ______ be rather cold sometimes.
| A．must | B．can | C．should | D．would |
The atmosphere of the earth ______ us from the strong sun light.
| A．prevents | B．keeps | C．stops | D．protects |
Finally they arrived at a place, ______ sold cigarettes and other small articles.
| A．which | B．where | C．in which | D．what |
All his friends and relatives came to ______ him on his daughter’s being admitted to Qin Hua University.
| A．celebrate | B．congratulate | C．memorize | D．respect |