Complete the sentences with the appropriate options.

[{"q":"She ... tired after working all day.","a":"must be"},{"q":"Ann ... to lock the door before leaving.","a":"might have forgotten"},{"q":"We ... on time if we take a taxi.","a":"could arrive"},{"q":"He ... a new car.","a":"ought to be"},{"q":"I ... my keys somewhere in this room.","a":"may have lost"},{"q":"They ... their bags this morning.","a":"ought to have packed"},{"q":"Adam ... here in 15 minutes.","a":"could arrive"},{"q":"It ... easy.","a":"can’t be"},{"q":"You ... something to upset your parents.","a":"must have done"},{"q":"We ... the train. We were at the station on time.","a":"can’t have missed"},{"q":"He ... a doctor, he studied to be a lawyer.","a":"can’t be"},{"q":"He ... the project already. He’s just started it.","a":"couldn’t have finished"},{"q":"He ... on time, he was too far away from here.","a":"couldn’t come"},{"q":"You ... all the cake, it was huge!","a":"can’t have eaten"}].