Pleasethe radio, Let’s listen to the morning news.
He was able to play the piano________the age of four.[ ]
Excuse me, I want to buy some stamps. Where can I find a post office? — I know ______ not far from here. You can find ______ without difficulty.
He arrived _________ Shanghai _________ 6:00 _________ the morning of June 2nd. [ ]
Did you meet the professor at the airport?—No，he ____ by the time I ____ there．
