busy有复数吗

busy有复数吗 busy有没有复数形式 busy 和busy at 有区别吗 he was busy的复数 busy有副词形式吗? he was busy的复数形式(速度) Is it a busy job 改为复数 she is very busy all day 复数 busy有动词的意思吗? red packet 复数有复数形式吗? sheep有复数吗 people有复数吗? hamburger有复数吗? country有复数吗? baby 有复数吗/ pear有复数吗 beef有复数吗? company有复数吗