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 |
. When the teacher came in, the student pretended ________ his lessons.
| A．to do | B．to have done | C．to be doing | D．to be done |
___ the technology developing, the games will become more and more___.
| A．As; amazing | B．Of; amazed |
| C．With; amazing | D．For; amazed |
Mark woke up one morning to find both water and electricity ___ because he had not been able to pay the bills.
| A．cut down | B．cut out | C．cut off | D．cut short |
---- Guess what! I have got “A” for my term paper.
---- Great! You ____ read widely and put a lot of work into it.
| A．must | B．must have | C．should | D．should have |
. Although surprised, she pretended to be calm____ nothing had happened.
| A．that | B．because | C．as if | D．even though |