China has long been a leader in the field of genetic research ________ improving agriculture.
A. aim to B. aiming on C. aimed at D. aims with
You lent him $10,000 yesterday? You must ________ by him!
A. be taken in B. have taken in C. take in D. have been taken in
— How do you find the food here?
— _______.
A. Terrible B. Terribly C. Well D. Better
Elizabeth _______ a good plan of increasing sales at the meeting.
A. put up B. put on C. put forward D. put down
The woman ________ Mr. Brown is a professor from Beijing University.
A. talk to B. talking to C. talked to D. being talked to
The head teacher comes to the classroom ______ to see if the students are quiet.
A. here and there B. now and then
C. sooner or later D. here and now
