A.teacherB.classmateC.friendD.neighbor
A. teacher
B. classmate
C. friend
D. neighbor
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【B18】
A. find out
B. rule out
C. search for
D. look for
【B20】
A. ordered
B. criticized
C. challenged
D. urged
A.whileB.whenC.asD.with
A. while
B. when
C. as
D. with
【B14】
A. case
B. argument
C. problem
D. question