You can select the courses _______ on your interest.
A. base
B. basing
C. to base
D. based
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No matter ________ happens, his parents always support him.
A. what
B. which
C. how
D. who
Finally, he came ________ a proper answer.
A. up to
B. to up
C. up with
D. with up
She gets a chance to act _______ her plan.
A. at
B. out
C. over
D. as
the investigation, the committee published the report on the cause of the accident.
A.Completed
B.Having completed
C.Completing
D.To have completed