抗利尿激素支配（）

A.肾脏远曲小管及集合管对水的重吸收

B.肾脏近曲小管对水的重吸收

C.肾脏近曲小管钾的重吸收

D.肾脏远曲小管及集合管对钾的重吸收

E.肾脏近曲小管及集合管对水的重吸收

—Where're the children, Mr Black?

—Oh, they _______ their PE lesson on the playground. [ ]

A. have

B. had

C. are having

D. have had