单项选择题

He left orders that nothing _________ touched until the police arrived here.

A．should be
B．ought to be
C．must be
D．would be
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单项选择题
How can I ever concentrate if you_________ continually _________ me with silly questions
A．have... interrupted
B．had... interrupted
C．are... interrupting
D．were... interrupting
单项选择题
When you have finished with that video tape, don't forget to put it in my drawer, _________
A．do you
B．will you
C．don't you
D．won't you
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