I have just heard on the radio that Nanjing Road is jammed _____ cars. [ ]

He didn’t make ______ clear when and where the meeting would be held.

We all _______our faces, so people don’t know us.

Mother told me ______ in bed because it’s bad for eyes.

Can you tell me the way to the hotel?—Well, go straight and ________, it’s ______ your right.[ ]