The Dongying-Hainan airline         for about 5 months. I have taken the flights three times.
#38883
A
is open
B
has opened
C
has been open
D
has been opened
推荐题目
— Have you finished your homework?— Not yet. But I _______ it in half an hour.
#39667
A
finished
B
have finished
C
will finish
D
finish
If Tom ______ the game, he will be the winner.
#38461
A
wins
B
will win
C
win
D
won
I don’t know when he _______ tomorrow, when he    tomorrow ,I will tell you.
#36577
A
will come;come
B
will come;comes
C
will come;will come
D
comes;would come
Our physics teacher told us that light ________ faster than sound.
#40111
A
travel
B
travels
C
is travelling
D
has travelled