【单选题】________ some teenagers don't realize is ________ difficult life can be after they get addicted to drugs.
【单选题】If the room that the guest wants to reserve is not available, what should you say?
A.
A moment, please. I’ll check the room availability.
B.
Thank you for waiting! A deluxe twin is available for those days.
C.
I’m afraid that single rooms are fully booked. How about a double room instead?
【单选题】一般情况下,基坑(槽)宽度大于( )m 时,采用轻型井点降水可采用双排布孔。