He is ____a movie actor.

agree with the first floor.
Or you can fill it with "more than".
他不仅仅是一个影视演员。
Maybe you should give more information.

You don't need to fill in anything. Leave it blank.

not?

not/ only/也可以不填

more than /空白/not/only

美女啊，好歹给点提示啊。
可以填很多东东的哦。
not
more than
not only
放空
actually等副词