—Could you help me with the math problem?—________ Your must be barking up the wrong tree.
____ I feel pity on them, I can’t really do very much to help them but contribute my pocket money.
— 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.
— What did you see at that time? — When the ship was on ____ point of sinking, people on ____ board rushed to the bank like ____crazy.
— What should I do before operating the new machine? — You’d better read its ______ first carefully.
About 60 percent of the students _____ from the south, the rest of them _____ from the north and foreign countries.