— The terrible accident is under investigation．
— Actually, quicker action _____ those workers trapped in the mine．
| A．might have saved | B．must have saved |
| C．should have saved | D．could have saved |
The composition is well written ___________ a few spelling mistakes．
| A．beside | B．besides | C．except | D．except for |
The foreign teacher suggested __________ more to improve our reading skills．
| A．us to do | B．we would do | C．we practice | D．we practiced |
My uncle promised to buy me a nice gift for my birthday, ________beyond my imagination．
| A．which | B．that | C．one | D．it |
Most scientists seem to agree that _______ certain limit should be set on _______consumption of cars to ease air pollution．
| A．a; the | B．/;the | C．the; / | D．the; the |
comb
| A．habit | B．debt | C．substance | D．above |