He told us whether a picnic was still under discussionA. to haveB. havingC. haveD. had

问题补充：

He told us whether a picnic was still under discussion

A. to have

B. having

C. have

D. had

答案：

A. to have

B. having

C. have

D. had

解析：

Wh-词或连词+不定式，起名词的作用，在句中可以用主语、表语、动词或介词的宾语等。本题中这结构作主语。