We ________the difficulty together, but why didn’t you tell me?

It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.

My sister met him at the Grand Theater yesterday afternoon, so he ________ your lecture.

If the green light doesn’t come on, you ______ go across the street.

—____ you please tell me your name?—Sure. I’m Linda.