—John has put forward _______ most challenging question for us to answer.—Yes, it really is. I have never heard _______ harder one.
To all the famous artists’ surprise.the unknown woman’s two ______paintings are also on show in the art exhibition.
Don’ t be joking. It’ s time to______your business.
Jim went to answer the phone. _____, Harry started to prepare lunch.
When ______questions in class,one should answer them as clearly as possible.
After the bell rings,which indicates the ending of the exam,you_____stay where you are until all your papers are collected.