We shouldn’t ________ the trees anymore. Instead, we should plant more trees.
A. cut off B. cut up
C. cut down D. close down
The book _________ me thirty yuan, I will put it to good use.
A. cost B. spent C. paid for D. took
－As we all know, reading in bed is __________ to our eyes.
－I agree with you. Don’t read like that.
A. thankful B. harmful C. helpful D. useful
－Have you found your lost pen?
－ No, I haven’t found __________, but I bought a new ___________ this morning.
A. one, that B. that, one C. it, one D. one, it
－Please look ________ the pictures above and answer my questions.
－Yes, sir.
A. on B. over C. up D. at
__________ years ago, life was much harder than it is today.
A. Hundreds of B. Hundred of
C. Four hundreds D. Four hundred of
