18.Boy: Mom, can we ride on the roller coaster?
Mother: Of course, we can.
Boy: Can we go on the Ferris wheel, too?
Mother: _______________
Boy: What? Mom, that’s for babies!
(A) You can go alone if you really want to.
(B) Sure. But let’s try the merry-go-round first.
(C) I am afraid that we don’t have time for that.
(D) Sorry. It is under construction.