—Excuse me, what’s this for?—It’s a cleaner and it       to pick up dirt.
#45057
A
uses
B
is used
C
is using
D
used
推荐题目
Students  should ______ to choose their own uniforms.
#44721
A
allow
B
allowed
C
are allowed
D
be allowed
The noisy boy ______stand up by a teacher. 
#44682
A
was made
B
was made to
C
made
D
made to
A new film _______ on TV next week .
#45031
A
show
B
is shown
C
will show
D
will be shown
 Professor Wang _______to give us a talk next week.――Really ? That is good news .
#44606
A
will invite
B
is going to invite
C
will be invited
D
has invited