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A. put B. wear C. puts D. wears

A. in B. during C. before D. later

【題目】I really don't know _________ this question.
A.which to do
B.which to answer
C.what to do
D.how to answer

A. a little bit B. little C. a bit of D. bit

【題目】— It's very kind _____ you _____ help me complete the difficult job.
— You're welcome.
A.to; for
B.for; of
C.of; to
D.for; to

A. having B. have C. to having D. to have

A. muchB. moreC. little D. fewer

— Yes, I did.

A. clean B. cleans C. to clean D. cleaning

A. Whether B. However C. Whatever D. Whenever