问题补充:
I will thank Mary for her having offered to the baby while I went out.
A. have an eye for
B. keep an eye out for
C. keep an eye on
D. cast her eye over
答案:
A. have an eye for
B. keep an eye out for
(答案→)C. keep an eye on
D. cast her eye over
解析:考查词组辨析:A.have an eye for对…有眼力”、“有识别…的能力B.keep an e ye out for留意C.keep an eye on照顾”、“留意”、“监视D.cast her eye over看一看,句意:我想谢谢玛丽因为在我外出时,她主动提出照看我的孩子。选C。