for

of

from

by

The window hould be opended

Let the window be opened

let the window be opened by you

The window must be open

with

by

on

of

very dangerous

very pleasant

very ugly

very unpleasant

unthinkable

unlikely

unbeliveable

unthinking

He is famous not only in Bangladesh but also in USA

He is not only famous in Bangladesh but also in USA

He is not famous in Bangladesh but also in USA

None is correct

of,in

to,by

to,for

from ,of

might be

could be

would have been

must be