1.Shesaidshedidn'ttakemyruler,butIamsureshe().
A.did
B.is
C.does
D.was
2.Hewalkedslowly()hisbadleg.
A.asfor
B.attheendof
C.becauseof
D.infrontof
3.Thestudentsshould()theteachercarefully.
A.listen
B.listento
C.belistened
D.belistenedto
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