单项选择题

Why he entered the house and how he managed to get out of it without being seen by people______a mystery to us all.
A.remain
B.remains
C.has remained
D.are remaining

A.A.remain
B.remains
C.has
B.are
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单项选择题
—You hate Jim, dont you? —______, I just think hes a bit annoying. Thats all.A.Not exactlyB.That's itC.AbsolutelyD.No way
A.A.Not
B.That's
C.Absolutely
D.No
单项选择题
—I wonder if you are occupied tomorrow. —______.A.Sure, I can do thatB.I will do my best to comeC.Sorry, I couldn't make itD.I don't have anything particular to do
A.A.Sure,
B.I
C.Sorry,
D.I
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