A:①③
B:①②
C:③④
D:②④
Work place
He works at a ____ station in New York.
At home
He gets up at six ten every morning.
He runs for ____ an hour.
On the way to work
He ____ to a bus stop.
The bus ride usually takes about fifty ____.
He thinks the bus ride is ____.
下列山脉中,是我国最靠北的一列东西走向的山脉的是:( )