两个动名词作主语时,谓语动词用单还是复?

问题描述:

两个动名词作主语时,谓语动词用单还是复?
Playing football and watching TV__ interesting.
A is
B are
C was
D were

有两种情况
1.单数:如果两个动名词指一件事Going to bed early and getting up early is good
2.复数,指两件事情,
在这使用复数