—Only once.
一 Yes, I have.
—He to the post office.
— No, I ______it since two years ago.
—There is no need. He (wake) up.
—Doctor Yu promised to attend the party, but he (not appear).
—Sorry. I (know) nothing about it because I (not see) it yet.
My parent s ten years.
—Sure, the exciting news makes a revival (复兴) ___________ in the ancient Silk Road and makes the British post - Brexit (脱欧后).
B: No, he hasn't.
— No, it isn't her. She_________Xiamen for a meeting.