Betty was feeling pretty blue for a while，but she’s better now．—_______．

Mr. White as well as his friends ________ a number of countries in the past few years.

________ people were hurt in the accident.

Have you any idea _______?

李明同学说话喜欢引经据典，在下面几种情境讲话时，他引用的古诗文恰当得体的一项是（ ）