She gave me a piece of cake in exchange __________ a slice of pizza.
A. from
B. for
C. with
D. over
查看答案
John, you forgot to do your homework again. Don’t __________ it happen anymore.
A. keep
B. let
C. take
D. get
Don’t help him! Let him ________ what he is supposed to learn.
A. learn
B. learned
C. to learn
D. learning
The inspector has been digging __________ the suspects since the murder case broke out.
A. from
B. for
C. into
D. onto
What__________ you so interested in sports?
A. to make
B. makes
C. is making
D. making