Jack is_that knows how to work out the problem.A

问题描述:

Jack is_that knows how to work out the problem.A
Jack is_____that knows how to work out the problem.
A.one of the boys B.the only one of the boy
C.not one of the boys D .the only one of the boys

D 首先用了is 说明单数 用the only one 然后是男孩中的一个 boys 用复数