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Hurry up, ______ you’ll be late for school.

Come ________ look at the picture.

[　　]

Come ________ look at the picture.

[　　]

The sky was clear, ________ the sun was shining.

[　　]

Hurry, _____ we shall be late for school.

A．a(chǎn)nd              B．or               C．but              D．so