单项选择题

—Hi, Tracy, you look tired.
—I am tired. I () the living-room all day.

A. painted
B. have been painting
C. had painted
D. have painted

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You should take the medicine after you read the().

A. lines
B. instructions
C. words
D. suggestions
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Please () why you're so late , said his girlfriend.

A. excuse
B. explain
C. apologize
D. tell
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