The students were ________ over the ________ problem，listening to the teacher with a ________ expression on their faces.
#19060
A
puzzled；puzzling；puzzling
B
puzzled；puzzling；puzzled
C
puzzling；puzzling；puzzled
D
puzzling；puzzled；puzzling
推荐题目
Everybody’s fingerprints are _______, so the police can easily find the thieves if any is left when they’re stealing.
#19489
A
single
B
particular
C
special
D
unique
—It’s amazing that an Australian girl sailed round the world alone in about 200 days. —That’s an inspiring story. Her courage is really _______.
#19901
A
unbearable
B
independent
C
admirable
D
enthusiastic
Einstein’s Theory of Relativity is so ________that most of us can not understand it.
#18453
A
controversial
B
abstract
C
appropriate
D
universal
---The famous singer will come to our school for a visit next week. ---Can you be more_____? ---On Sunday morning.
#20802
A
specific
B
appropriate
C
due
D
typical