Mr. Black is the professor（）I have the greatest respect.

单项选择题—She was late for the party. —That's（）she had forgotten the exact time.

A. why
B. how
C. because
D. whethe

单项选择题Do you know（）they are getting on well with the project

A. whether
B. what
C. how
D. when

单项选择题______ was the story the boy told the reporter.

单项选择题It's best ______ English like this.

单项选择题Greatly ______ as the leading scientist, he was asked to give lectures in many countries.