We can never expect _______bluer sky unless we create ______ less polluted world.
| A．a；a | B．a；the | C．the；a | D．the；the |
People hope the prices will _____ fast . .
| A．going up | B．be gone down | C．raise | D．go down |
The head teacher isn’t in the office______.
| A．on the moment | B．for a moment | C．at the moment | D．in a moment |
No one is allowed ____ the room in the daytime..
| A．to be entered | B．to enter | C．entering | D．enter |
His father is a teacher and his mother is a teacher ______. .
| A．as well | B．either | C．also | D．too |
The team _____ 10 members .
| A．is consisted of | B．consists of | C．consists | D．is consisting of |