单项选择题

The problem has ______ simply because you didn"t follow my instruction.

A．raised
B．risen
C．arisen
D．aroused
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单项选择题
Mrs. Smith, together with her friends, ______ to visit the new museum.
A．are going
B．are
C．is going
D．will be
单项选择题
______ before we leave the day after tomorrow, we should have a wonderful dinner party.
A．Had they arrived
B．Were they to arrive
C．Were they arriving
D．Would they arrive
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