出國留學 的英文怎麼說?

[1] be sent abroad for education[2] send somebody to school abroad[3] send somebody to study abroad[4] go to school abroad[5] study abroad

白話翻譯即可，abroad 就是到國外去的意思，也時可省略，如 I went to school in the U.S. 就可以了，abroad 強調是在國外