When the cooking class changed to Tuesday，I had to_________so that I could________my

daughter from her piano lessons.[ ]

A．drop in；pick up  

B．drop off；pick up

C．drop out；pick up  

D．drop by；pick out

在制定饭店的客房清扫标准时，必须考虑的因素有______。

A．工时定额

B．整洁状况

C．布置规格

D．人员配置

E．进房次数