请问下面那句英语用法是对的:
1、Hemusteitherbeverycleverorfoolish.
2、Heeithermustbeverycleverorfoolish.
3、Hemustbeeitherverycleverorfoolish.
4、Henotonlymustbeastudentbutaboyaswell.
5、Hemustbenotonlyastudentbutaboyaswell.
6、Hemustnotonlybeastudentbutaboyaswell.