When chatting with her on the mobile phone, the battery _     dead suddenly.

_______ is known to us all that the old scientist, for _______ life was hard in the past, still works hard in his eighties. 

— How did they get to know each other?—The Chinese skier made the of the Canadian player at 2014 Sochi Winter Olympic Games.

---How do you find my composition, Mr John? ---Good, ___too many spelling mistakes. You can’t imagine what great difficulty I had ___them.

On seeing her new classmate，she ________ and said with a smile，“Glad to meet you.”