be helpful to do为什么不对
be helpful to do为什么不对
be helpful to 后面接doing 还是do
作文Be helpful to others
Be helpful to others急!
be helpful in be helpful to be helpful for 三者区别即怎么用
有没有be helpful(for sb) to do这个短语
be helpful to others 这个搭配对吗?
为什么 do you like to sing and to dance 不对?
be helpful to others的另外一种说法和help sb.to do sth.的另外一种说法
对某人有用是be helpful to sb.还是be helpful for sb?
to be a lovely shanghainese we_____ be helpful and friendly
I think it helpful to do the housework和I think it is helpful