Exercise complete using 'to be supposed to' look! it’s snowing again! and it (be) spring! but you (not / press) that button. try the other one. but this letter says we (be) there by two. you can’t wear that tonight! you (dress) formally for these occasions. yes, i think we (stand up) when the teacher walks into the room. you (not / use) a dictionary. it’s here in the rules. don’t tell anyone i told you. we (not / know). he says we can look at the pictures but we (not / touch) them.