The rules of our school don’t allow _______ at school. That is to say, nobody is allowed _______ here.
| A．to smoke; to | B．smoking; smoking | C．to smoke; smoking | D．smoking; to smoke |
My glasses，________I was like a blind man, fell to the ground and broke.
| A．which | B．with which | C．without that | D．without which |
The computer system________suddenly while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |
With ______ help of WWF, many endangered species are now enjoying a peaceful life in ______ wild.
| A．/; the | B．the; the | C．the; / | D．/; / |
The plan was so shallow and impractical that no serious _________was ever made to realize it.
| A．recognition | B．comment | C．attempt | D．credit |
To my mind, the secret to happiness__________ your successful work and your contribution towards others’ happiness.
| A．results in | B．consists in | C．brings in | D．takes in |