________ they become dirty, the lakes are not able to clean themselves
| A．Once | B．Since | C．As | D．Because |
There’s only ten minutes to go. We can’t wait any more---- ______, we should start at once.
| A．what’s more | B．in a word | C．in other words | D．in the end |
This magazine is said to ____________ much information not found in other magazines.
| A．write | B．cover | C．print | D．read |
The two tables are of the same shape but the one made of steel costs more than ________ made of wood.
| A．that | B．those | C．one | D．it |
At ______ end of the meeting, our headmaster encouraged all of us to go to ______ college.
| A．the; the | B．an; / | C．/; / | D．the; / |
If he _____ his legs in the last training, he _____ the coming World Cup, which he has been longing to compete in.
| A．hadn’t hurt; would join in |
| B．hadn’t hurt; would have taken part in |
| C．didn’t hurt; would go in for |
| D．didn’t hurt; would have taken part in |