Tourism, it brings in money to a country,can also result in damage to the World Heritage sites there.
| A．because | B．as | C．while | D．since |
While building a tunnel through the mountain, ________ .
| A．an underground lake was discovered |
| B．there was an underground lake discovered |
| C．a lake was discovered underground |
| D．the workers discovered an underground lake |
Lei Feng is always ready to help others when they are in trouble and he never ______ their request.
| A．turns up | B．turns over | C．turns in | D．turns down |
The film “A World without Thieves” a great success and brought in a large profit to the cinema .
| A．appreciated | B．enjoyed | C．won | D．seized |
—What about ______ lecture you attended yesterday?
—To tell the truth, it was too boring. I can’t stand ______ lecture like that.
| A．a; the | B．the; a | C．the; / | D．the; the |
______difficulties we may come across, we' ll help one another to overcome them.
| A．However | B．Wherever | C．Whenever | D．Whatever |