The girl sitting next to me on the plane was very nervous, for she            before.
#39482
A
hasn’t flown
B
hadn’t flown
C
didn’t fly
D
wasn’t flying
推荐题目
 My sister has learnt English _________.
#36360
A
for twelve years ago
B
since she was four
C
twelve years ago
D
at the age of four
 Listen! My sister_______ the piano in her room.
#39812
A
play
B
is playing
C
plays
D
Playing
You will _______ if you _______ late again, I think. 
#42006
A
punish; will come
B
be punished; will come
C
punish; come
D
be punished; come