单项选择题

She （） always （） what she has just drawn and beginning overagain.

A. is; erasing
B. was; erasing
C. has; erased
D. had; erased

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Three fourths of the homework （） today.

A. has finished
B. has been finished
C. have finished
D. have been finished
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All the rooms are （）with electric light.

A. supplied
B. given
C. offered
D. burnt
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