In order to _____ a good command of German, she quitted her job and went to study in Germany.[ ]

The old woman ______ her sons and daughter ______ and see her from time to time.

He tried his best to solve the problem, ______ difficult it was

Do you know that Yao Beina, a Chinese pop singer, _______ on 16 January— Yes. We are sorry to hear that she died of cancer.

Don’t today’s work for tomorrow. Today’s work must be done today.