完形填空 急！！

Allan is visting Beijing .He needs a m__ of the city.It shows how to travel around the city .Here are the ways of t___ around by bus.Buses go to d___ places.They are cheap,but sometimes crowed.There are a___ double-decker buses.They are comfortable.You can go sight-seeing from the top deck.Here are two ways :One from the east to the west;another round the city like a ring road.The underground trains are fast,b___ very crowded in the rush hous.BY TAXI Taxis are fast ,but they are rather e___.

map

travel

different

also

but

expensive