Do you know how people greet each other in the Middle East? —You can expect to be_______ when you meet someone

ggest whale is _____ blue whale, which grows tobe about 29 meters long—the height of ____ 9-story building

_________ it is to be a host! — I agree.

The retired man donated most of his savings to the school damaged by the earthquake in Yushu, _____ the students to return to their classrooms. [ ]

You never know ______ you try something.