24. —May I go and play with Dick this afternoon, Mum?—No, you can’t go out _______ your work is being done.
—Have you seen your friend off ? —Yes. I watched the train leaving the station it disappeared from sight.
We began to open to the outside world in the late 1970s.,there have been great changes in the country.
Hurry up! Flight 4406 off at 18:40.
Tom hasn’t come to work since last Friday. he have had an accident?
To know more about Japan’s recent claims about Diaoyu Islands, you can use the Internet or watch CCTV news, or .