—I’m not finished with my dinner yet.

—But our friends      for us.

—How long _____ he ______ in the USA?

—Three years. But he never regrets coming back to China.

—Would you like to      the discussion this Saturday?

—Sorry, I have an important meeting to      .

This is the first time that I      face to face with the president.

Silk from China found its way to India, the Middle East and Rome,      spices(香料) and glass, which was not known to China.

How time flies! It has been ten years         I moved to Chongqing.

.It remains       whether Jim will be healthy enough to play in the finals.

It is well known to all that a machine needs fuel to run;    ,man needs food to live on.

     students are required to take the boat race.

       with Dan’s hometown, yours are exciting and lively.