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3.Sam fell___ his bike.
A.of
B.on
C.off
4.Shanghai is a famous city.My cousin Xiaohu ___there.
A.lives in
B.live in
C.lives
5.We were hungry and thirsty,___we bought a watermelon.
A.and
B.so
C.then
6 _____ they have a picnic tomorrow?
A Did
B Are
C Will
7. He naughty now ____.