---How ____ is it from here Ningbo to Xi'an?  ---It's about two ____ flight.    
#45774
A
long, hour's
B
far, hour's
C
long, hours'
D
far, hours'
推荐题目
Jack felt nervous when he found the physics problems ____ to work out.
#45425
A
easy enough
B
too easy
C
too difficult
D
difficult enough
Don’t play in the street. It’s not ________ . 
#47428
A
enough safe
B
enough dangerous
C
dangerous enough
D
safe enough