Living in _______ ever increasingly fast-paced world, we are facing greater competition, so we must take ________ advantage of every opportunity to develop.
| A．an; the | B．an; / | C．the; an | D．the; / |
---Do you still remember when we went to Chong qing?
----I can’t remember now but_____ sometime last summer?
| A．could it be | B．might it be | C．must it have been | D．could it have been |
The demand that the law on gun ownership _____ be changed ___ is very strong.
| A．changes | B．will be changed | C．be changed | D．be changing |
The increase of the number of the students makes the limited computers not ________ to each student.
| A．available | B．helpful | C．acceptable | D．affordable |
He had just sent an email to his pal on the Internet ________ the system broke down.
| A．while | B．when | C．after | D．since |
While intelligent people can often ______ the complex, a fool is more likely to complicate the simple.
| A．sacrifice | B．substitute | C．simplify | D．survive |