—Do you hear the noise outside?
—Yes. There must be some kids outside.
- A.have fun
- B.has fun
- C.to have fun
- D.having fun
答案
正确答案:D
知识点:非谓语动词分词

此题考察动名词短语做后置定语,having fun outside修饰some kids。故选D。

略
