Would you let（）to the park with my classmate, Mum?

A.Not at all.
B.Are you sure?
C.Great! I'd love to.
D.You're welcome.

A.I don't expect
B.I'm afraid not
C.I don't think so
D.I believe not

A.as twice fast
B.as fast as twice
C.as twice as fast
D.twice as fast