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
解析:可联系答.案.网客服索取。
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