猜猜我是谁。(根据意思写词语)
1.集市上,购物的人们来来往往,热闹非凡。( )
2.爸爸的同事来我家,几句礼节性的应酬的话之后,他们便开始商量一些事情。( )
1.熙熙攘攘 2.寒暄
There are nine______ students at Green High School. Five _____ of them walk to school.
A.hundred, hundred
B.hundreds, hundreds
C.hundreds of, hundred
D.hundred of, hundreds
电磁铁由______和______组成.电磁铁磁性的强弱与______和______有关.