It’s difficult for such a girl to swim ____ the river.
#50697
A
cross
B
across
C
crossing
D
crossed
推荐题目
 Look at the library. It's    our classroom.
#47530
A
in the front of
B
on front of
C
in front of
D
on the front of
The sunlight goes_____the window.
#49939
A
through
B
at
C
along
D
across.