Don’tbeafraidofaskingyourteach

Don’t be afraid of asking your teachers of help______ it is needed .

A．as

B．since

C．unless

D．when

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They must have finished the work, ______?

A．mustn’t they

B．haven’t they

C．hadn’t they

D．didn’t they

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－There ______ be. I’ll make a phone call to find it out.

A．must

B．would

C．will

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－It ______ open. I had locked it myself and the key was in my pocket.

A．can not be

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－My goodness! You ______ yourself. You ______ do that next time.

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