As young adults, it is our_____ to try our best to deal with each challenge in our education with the help of our teacher. 
#29789
A
work
B
job
C
duty
D
task
推荐题目
It is over _________ from Huaibei to Hefei.
#28385
A
four hour’s drive
B
four hours’ drives
C
four hours’ drive
D
four hour’s drives
— Whose room is this? — It’s ____.
#29514
A
Mike and David
B
Mike’s and David’s
C
of Mike and David
D
Mike and David’s
 My father's ________ is my aunt. 
#28363
A
son
B
daughter
C
sister
D
brother