The students seemed ____ , so I repeated the ______ question. 
#19702
A
puzzled, puzzling,
B
puzzling puzzled,
C
puzzling puzzling
D
puzzled, puzzled
推荐题目
I’ll go and see you whenever _______. 
#17650
A
you are convenient
B
it will be convenient to you
C
at your convenience
D
it is convenient for you