單項(xiàng)選擇題

She was so interested in the book that she（）it for three hours before she realized it.

A.had read
B.read
C.was reading
D.would have read

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單項(xiàng)選擇題

（）in the leg, the soldier was sent to hospital at once.

A.Seriously injured
B.To be seriously
C.Being injured seriously
D.Having injured

單項(xiàng)選擇題

（）in the open air has given you a good color.

A.Work
B.Worked
C.Working
D.To be working