A．Climbers develop skills useful in other activities.
B．Climbers have the opportunity to be outside and enjoy the scenery.
C．Climbing isn’t as expensive as other sports.
D．Learning to climb doesn’t take a very long time.

A．She won’t be able to get the book before class.
B．The books there are too expensive.
C．She hopes to get a good deal on some second-hand books.
D．The textbook she needs isn’t in yet.