The headmaster didn't make _____ clear when and where the sports meeting would be held.[ ]

A. this

B. that

C. it

D. one

子女教育的选择性支出包括( )。 Ⅰ．学杂费 Ⅱ．择校费 Ⅲ．学前教育 Ⅳ．才艺班支出

A．Ⅰ、Ⅲ

B．Ⅲ、Ⅳ

C．Ⅱ、Ⅳ

D．Ⅰ、Ⅱ、Ⅲ、Ⅳ