Modal verbs + passive voice \may \must\could\can be + past participle
might You might be told to go hone !
may You may be allowed to stay in bed all day tomorrow !
You may not be allowed to go to the party on Friday night .
must It must be taken to keep your temperature down .
could You could be made to do the English test on your own when you get back !
can She can be made to change her mind !