题目内容
【题目】Dr Ma______ in a hospital but now he works for ORBIS on the plane
A.used to work
B.used to working
C.was used to working
D.was used to work
【答案】A
【解析】used to do sth 过去常常做某事，句意为：马大夫过去在一家医院工作，但是现在他在飞机上为ORBIS工作。故选A。
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题目内容
【题目】Dr Ma______ in a hospital but now he works for ORBIS on the plane
A.used to work
B.used to working
C.was used to working
D.was used to work
【答案】A
【解析】used to do sth 过去常常做某事，句意为：马大夫过去在一家医院工作，但是现在他在飞机上为ORBIS工作。故选A。