make certain/sure
make certain/sure
be sure of和make sure of还有make certain of和be certain of的区别?
make sure to do sth、be sure of sth、be sure that 、be certain
ensure与 make certain与 make sure之间有什么区别,如何使用?
sure certain的区别
certain 与 sure 的用法
make sure
sure.make sure用法
certain和sure有什么区别
indeed 与certain sure的区别
be sure to 和be certain
Be sure 和 make sure