The results of the medical checkup suggested that my father ______ in poor health, so the doctor suggested that he ______ smoking and take more exercise.

He knows it is high time that he ________ at once.

(2009辽宁大连调研I ______ have been more than six years old when the accident happened. 

 — Did you hear about Zhang Lili who saved the kids from being run over by a school bus? — Yes. What do you think most people _____ if they were in a similar situation?

 You can’t imagine that a well-behaved gentleman ______ be so rude to a lady.