18) Hotel place for ... a) receptionist b) room boy c) traveler d) police 19) people need the place to live at the hotel for .... a) all days b) all months c) a

18) Hotel place for ...
a) receptionist
b) room boy
c) traveler
d) police

19) people need the place to live at the hotel for ....
a) all days
b) all months
c) all weeks
d) several daya

20) Which one of the following expressions is regarded as prohibition ?
a) I'm sorry.
b) no smoking.
c) open the door.
d) Be careful.