问题
She looks very sad. I want to help her, but I just don’t know ____ to do it.
A:what
B:when
C:how
D:which
B:when
C:how
D:which
正确答案是:
同类题型
Do you know the man _____? [ ]
Please bring the dictionary ______ I lent you last week.[ ]
________ is your school life like?—It’s very wonderful.
Must we get to the airport before 8 o’clock?— No, you _____. The plane takes off at 12 o’clock.
I’d like to invite you to dinner this Sunday, Mr.Smith. —_____.