Liu Ming jumps highest _______ he isn't tallest in our class.
A. because
B. though
C. for
D. so
—Granny, the school trip was very exciting but a little tiring.—Oh, could you tell me __________?
A. how did you go to the park
B. what you did in the trip
C. that you saw something beautiful
D. if your friends had played with you
I think that studying in pairs of groups is necessary ________you want to learn from each other in class.
A. though
B. until
C. unless
D. if