When you go by train, make sure you take an express, ____ stops only at big stations.
| A．one | B．one that | C．that | D．what |
____ I feel pity on them, I can’t really do very much to help them but contribute my pocket money.
| A．While | B．As long as | C．When | D．Where |
— You looked so ______, what’s the matter?
— I’ve had a very trying time this afternoon. I had to spend the whole listening to the _____ lecture by Mr. Smith.
| A．tired; boring | B．tired; boringk+s-5#u |
| C．tiring; bored | D．tiring; bored |
— What did you see at that time?
— When the ship was on ____ point of sinking, people on ____ board rushed to the bank like ____crazy.
| A．the; /; / | B．a; /; / | C．the; a; / | D．the; /; a |
— What should I do before operating the new machine?
— You’d better read its ______ first carefully.
| A．explanations | B．instructions | C．descriptions | D．introductions |
About 60 percent of the students _____ from the south, the rest of them _____ from the north and foreign countries.
| A．are；is | B．is；are | C．are；are | D．is；is |