单项选择题
A.Yes, they're here.B.They sent it on Monday.C.Four, including Mr. Flynn.
A.乘客须知B.安全注意事项C.警示标志
A.Mr. Smith will be replaced if he makes another mistake.B.Mr. Smith is an admirable chief of the Asian Department.C.Mr. Smith's department is more successful than all the others.D.Mr. Smith is seldom in his office.