The old man was quite weak after the accident so he.A. must look afterB. must be taken ca

问题补充：

The old man was quite weak after the accident, so he.

A. must look after

B. must be taken care

C. must be looked after

D. must take care of

答案：

A. must look after

B. must be taken care

C. must be looked after

(答案→)D. must take care of

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