I really don't know ____ .A.to swim B.how to swim C.to swim how D.how swim

I really don't know ____ .A.to swim B.how to swim C.to swim how D.how swim
I really don't know ____ .A.to swim B.how to swim C.to swim how D.how swim

I really don't know ____ .A.to swim B.how to swim C.to swim how D.how swim
B
know how to do sth 知道做某事
必须有个疑问词
请在客户端右上角评价点“满意”即可,

B
满意给采纳哦