Lucy met her mother in the park by chance.
#48201
A
with accident
B
by accident
C
by mistake
D
by opportunity
推荐题目
 I’m sorry I took your backpack______ .
#51332
A
because mistake
B
with mistake
C
by mistake
D
by mistakes
There are some apples ___ the tree. 
#50993
A
on
B
in
C
of
D
to