应该是It's necessary for keep fit.为什么正确答案确是It's necessary to ke
It`s necessary for us to keep quiet in the hospital 怎么改为同义句
英语翻译It's necessary for us to have a meeting.
It's necessary for sb.to do.(中文意思)
it's necessary for us to have healthy eating habits
it’s necessary for the younger people to visit t
“It‘s necessary for me to wash my clothes”中,为什么要用“to wash”?
It's necessary to learn English well.
一道首字母填空It's necessary for young people to find it hard to pu
同义句转换It is not necessary for you to worry about your son‘s s
It‘s necessary for us___(learn)English well说明原因
it's necessary for you___(eat)three meals a day
modern science is developing quickly it's necessary for doct