second solution is: to check the three lecture halls on each floor till he finds the right one. not to check every room.
and second option can be developed better:
it’d be really embarrassing to stick his head into each lecture hall, asking if it is the right one. It’ll disturb the other professors and students as well.
22 in 30
second solution is: to check the three lecture halls on each floor till he finds the right one. not to check every room.
and second option can be developed better:
it’d be really embarrassing to stick his head into each lecture hall, asking if it is the right one. It’ll disturb the other professors and students as well.