单项选择题

() from heart trouble for many years, Professor Brown has to take some medicine with him wherever he goes.

A. Suffered
B. Suffering
C. Having suffered
D. Being suffered

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单项选择题
Little Tom was reluctant to tell the schoolmaster () he had done the day before.

A. that
B. how
C. where
D. what
单项选择题
Mr. Zhang was much disappointed to see the washing machine he had () went wrong again.

A. it repaired
B. to be repaired
C. repaired
D. repairing
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