After trying hard, they _______ the hope of finding an effective way to solve the problem.
| A．abandoned | B．released | C．discouraged | D．resigned |
The ability ________ an idea is as important as the idea itself.
| A．expressing | B．expressed | C．to express | D．to be expressed |
We were just about ready to leave _____ it started to snow.
| A．when | B．before | C．after | D．since |
It’s a mistake to think of Chongqing only ______ its tourist attractions.
| A．in addition to | B．by way of | C．in terms of | D．by means of |
Is this the young engineer ________ you want to have ________ the computer for me?
| A．who, repaired | B．that, repairing |
| C．who, to repair | D．that, repair |
-----They used to be good friends, but now they are like strangers. ----- How _____ this ______?
| A．were; come about | B．did; come about |
| C．were; taken place | D．were; happened |