Thanks _______the Great Green Wall, the land produces more food.
#60580
A
for
B
to
C
of
D
by
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Our class won a medal and the presentation ________on Thursday afternoon.
#60804
A
was happened
B
was taken place
C
was held
D
were on
--Nick, ____ you ____ my book?--Sorry, I came here just now .
#61279
A
have, seen
B
did, see
C
has, seen
D
do, see