Stamps ______ sending letters.
#45020
A
used to
B
are used to
C
are used for
D
are using
推荐题目
Young trees should ________ every day.
#45076
A
water
B
watered
C
be watering
D
be watered
He thought that computers would never be _____ most people.
#44685
A
used by
B
used for
C
useful by
D
use by
I think students______ to do homework with friends.
#44694
A
is allowed
B
are allowed
C
should allowed
D
should be allowed