两个动名词作主语时，谓语动词用单还是复？

Question

Playing football and watching TV__ interesting.
A is
B are
C was
D were

Answer 1

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

Answer 2

复数。。B

Answer 3

B 用复数

Answer 4

选B

playing football and watching TV 是两件事，因此用复数。