keep 常可后接“宾语 + 现在分词”

有一读者问：如何做这道选择题？

(1)He told her not to_________him waiting for a long time.

A. let　B. make　C. keep　D. want

应选C。keep sb. doing sth. 是一常用结构，再如：

(2)Keep the stove burning.

(3)The full moon kept my dog barking.