______, the conference began.
#91020
A
The candidates having taken their seats
B
The candidates had taken their seats
C
Taken their seats
D
Taking their seats
推荐题目
 With all the money ________, the man had to make a living by begging.
#91447
A
run out
B
to run out
C
used up
D
to use up
With lots of trees and flowers _____here and there, the city looks very beautiful.
#91553
A
having planted
B
planted
C
have been planted
D
to be planted
The children went home from the grammar school,their lessons ________ for the day.
#90950
A
finishing
B
finished
C
had finished
D
were finished