皮皮学，免费搜题
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【单选题】
—Must I go to school tomorrow? —______ It's weekend. [ ]A.
Yes, you must.
B.
No, you needn't.
C.
No, you mustn't.
D.
Yes, you can.
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皮皮学刷刷变学霸
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【单选题】I have just received an invitation from a good friend of mine, asking me to pay a visit to ______ we used to study together.
A.
what
B.
where
C.
how
D.
which
【单选题】I just received a proposal________.
A.
that could benefit both of us.
B.
that you have finalized the delivery dates.
C.
to be more flexible over terms of payment.
D.
that is made with certain conditions.
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