--- It’s difficult for the village children to cross the river to get to school.
--- I think a bridge ________ over the river.
| A．should be built | B．should build | C．was built | D．has been built |
--- Where ___________ your pen pals from? --- The United States.
| A．does | B．do | C．is | D．are |
This is a nice city ______ many interesting places.
| A．of | B．with | C．on | D．and |
A large number of students planting trees now, the number of the students 2000.
| A．is, is | B．are, is | C．is, are | D．are, are |
The government keep our country.
support B. supports C. supporting D. supported
When he heard the good news, he felt .
| A．happiness | B．happiest | C．happy | D．happily |