问题

Some dogs just don’t know _______ fun.
A:how have
B:how to have
C:how having
D:how to has
B:how to have
C:how having
D:how to has
正确答案是:
同类题型
We went to see the man who was in hospital yesterday. — __________.
_____ do you live in that small town?— “For ten years.”[ ]
Is the woman walked past just now your teacher?-Yes. She teaches English.
He plays ____________ piano every day to become the champion of his country.
They did not find _____ to prepare for the worst conditions they might meet.