You should try to ________ a balance between work and study.
A. mark
B. major
C. keep
D. break
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They have to ______ a limit to the expense of the eating.
A. exhaust
B. important
C. set
D. feel
Mary's life is a series of process undergoing change ______ better.
A. to
B. up
C. in
D. for
You should fill in each blank with the proper form of the words in the brackets.______ (set) aside enough time for study is a must-do for every college student.
He spent all his time ____________ (study) English.