---Who’s the man over there? Is it Mr. Black?--- It _________ be him. He’s much taller.
—____ the afternoon of June 2nd, many foreigners arrived ______ Shanghai.
Please ________ your cigarette. It’s bad for others on the bus.
Which sign means you can’t drop litter?
We ________ not to go that way because the road ________.
I used ____ papers and watch TV after dinner. But now I’m ________ a walk.