答案：B
－Personally，I believe I can do it well on my own.
－________Selfconfidence is the first secret of success.
A．It's up to you.
B．Take it easy.
C．Let' s get going.
D．I'm with you on that.
六年级男女生的比是5：4，其中男生有80人，六年级一共有多少人？
