The teacher is busy ____ teaching.
A．with
B．for
C．on
D．of
答案：A
Yesterday, my mother cooked noodles ______ lunch.[ ]
A. for
B. in
C. with
按《交强险费率浮动暂行办法》，不可能出现的浮动比例是（）。
A.5%
B.10%
C.20%
D.30%
