题目内容：

Look at those children ______ a lovely dog over there.
A.play with B.are playing C.playing with D.are playing with

优质解答

C.playing with,动名词修饰those children

追问：

为什么不是D?

追答：

如果选D的话，这句话就有两个动词了，look和are playing with.语法错误