- The air pollution is terrible.
- It will be worse ________ we take action to protect the environment.
| A．if | B．unless | C．until | D．when |
The movie is about a true story ______ happened in Tang Shan in 1976.
| A．where | B．which | C．what | D．when |
It is said that another new underground train ______ not far from the center of the city.
| A．is to be built | B．has built | C．is to build | D．be built |
--- I saw you come to school by bus this morning
--- Oh, I ______ come to school by bus, but it is raining today.
| A．sometimes | B．usually | C．hardly | D．always |
--- Don’t talk with Mr. Baker.
--- I agree with you. ______ you say, he always disagrees.
| A．Whoever | B．Whatever | C．Whenever | D．Whichever |
TV and computer can our eyes to the outside world.
| A．call up | B．open up | C．turn up | D．take up |