They put their books____to make the library clean and tidy.
#46653
A
under the chair
B
on the floor
C
behind the door
D
in the bookcase
推荐题目
Our school is ______ children ______ 5-12.
#50729
A
in; for
B
for; in
C
of; for
D
for; of
______Hepburn’s acting years, she insisted _______ working closely with UNICEF. 
#48579
A
Though, to
B
Throughout, to
C
Throughout, on
D
Throughout, onto