The public transport system in Beijing is very good now, so there _____be any difficulty in traveling around the city.
The telephone _______ three times in the last hour, and each time it ________ for my father.
“Aha, you’re a chain smoker!” “Only at home. Nobody _______ that but you.”
“What’s your opinion on the matter, please?” “Oh, sorry, I _______.”
“I took part in the TOEFL. It was really hard.” “Did you ______ a lot?”
You ______ television. Why not do something more active?