--- Do you know his ________? --- No. I only know he lives in Hongqi Street. We can call him before we go to his house.
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