多项选择题
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.
A.Everyone told him to cheer up.B.Spending money puts him in a good mood.C.He had to pay a high price for his new stereo.D.He's very pleased with his purchase.