Daddy didn't mind what we were doing, as long as we were together, ________ fun.

A.had

B.have

C.to have

D.having

答案及解析： D

解析：

解析：句意：父亲并不介意我们正在干什么，只要我们在一起玩得高兴就行．由句中were可知A、B不对．C项表示即将发生，而由上句we were doing可知下句同样表动作正在进行．命题立意：考查时态，此题须明确时态表达的结构及意义．