—Mum, I can’t _______the apple on the table. Can you give me a hand?—Sure. Here you are.
They________to Tibet many times.
Most of the young people can hardly speak any Chinese,________?
He likes watching the children________football.
—Why were you late for school? —Because my bike________on the half way.
The teacher________the office for a few minutes when we arrived.We didn’t meet him. A.have left B.had left C.had been away from