—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
Stamps ______ sending letters.
#45020
A
used to
B
are used to
C
are used for
D
are using
    These photos _______ by my sister on Mount Tai last summer.
#45007
A
take
B
took
C
are taken
D
were taken
Mr. Li ____ to give a talk in our school yesterday.
#44630
A
invites
B
is invited
C
was invited
D
invited
Old people must be____ politely
#44739
A
spoken to
B
speak to
C
poken
D
spoke