Mom asked me to grandpa when she was out.A. look upB. look atC. look forD. look after

网友回答

A. look up
B. look at
C. look for
(答案→)D. look after
解析：look up查阅；look at看；look for寻找；look after照顾，关心。句意：当她出去时，妈妈让我照顾爷爷。故选D。