问题补充：
Our neighbor Mr. Smith used to money but he never gave it back.
A. lend
B. keep
C. borrow
D. steal
答案：
A. lend
B. keep
(答案→)C. borrow
D. steal
解析：句意：我们的邻居史密斯先生过去借钱，但是他从不归还。分析从外面往里借要用borrow；lend是从主语的事物借到外面；keep是保持；steal是偷。本句是主语从外面借钱往里主语处来，因此用borrow,故选 C
