When I arrived at the station, I found the train _________ for passengers. 
#103476
A
waited
B
had been waiting
C
would wait
D
wait
推荐题目
In the past twenty years great changes _______in China.
#103431
A
were taken place
B
have been taken place
C
have taken place
D
were happened
— Can you come to my birthday party tonight? — I’d love to, but I______ on a patient at 6 o’clock.
#100074
A
will operate
B
am operating
C
will be operating
D
will have operated