My teachers ask me to be ________ honest student today and ________ useful man tomorrow.
A.a; the B.an; a C.an; the D.an; /
A.chalk B.fall C.talk D.half
A.climb B.before C.best D.below
A.send B.even C.pepper D.else
A.hear B.ear C.heart D.clear
A.paper B.shake C.space D.add