— Professor Smith, some students want to have a talk with you. ___ they wait here or outside?— Show them in now, please.

--I went to work on foot yesterday, though it was raining cats and dogs.---You __________ a bus. You were likely to get a cold.

No student ______ go out of school for snacks during the break without the teacher’s permission.

When he was there, he ______ go to that coffee shop at the corner after work every day.

(2012·重庆高考)—________ you interrupt now? Can't you see I'm on the phone?—Sorry Sir, but it's urgent.