Please don't stand up in class until you          .
#39211
A
were told to
B
are told to
C
were told
D
are told
推荐题目
My aunt left her office after she __________ her work. 
#37970
A
had finished
B
finishes
C
has finished
D
was finished
My mother _______________ my aunt called her.
#41811
A
was cooking while
B
cooked when
C
cooked while
D
was cooking when