The teacher told the students        any food into the computer room.

You should really        smoking. It’s a terrible habit.

—Please _________ the tigers. It’s dangerous to take photos with them.
—Oh, I see. Thank you.

How time flies! Three years ____________ really a short time.

       I felt it hard to keep up with my classmates. But whenever I want to ____________, my teacher always encourages me to work harder.

— How long have you ________?
— For three days.

— You don’t look well, Don! You’d better see your doctor.
— I ________, but he said there was nothing wrong.

Simon_________ his fingers when he was cook­ing the dinner.

The bus came and we_________.

Yi Zhongtian’s simple and interesting explanation of history has _________ lots of TV view­ers.