The young _________ are loud.[ ]
A. man
B. men
C. woman
答案：B
顶烧炉火嘴火焰过长的处理方法是（）。
A．开大一次风门
B．开大二次风门
C．关小一次风门
D．关小二次风门
—Look! I found a wallet in the classroom
—You should give it to its .He must be upset about losing it.
A．volunteer
B．nurse
C．passenger
D．owner
