There [are] many children [and] adults [whom] behavior[is] generally unacceptable.
A. are
B. and
C. whom
D. is
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A. what
B. where
C. which
D. when
[Since] it’s raining [hard] now we [had better] to put off our sports meet [till next week].
A. Since
B. hard
C. had better
D. till next week
[Next weekend] he [will] visit the airport [which] he [worked] 30 years ago.
A. Next weekend
B. will
C. which
D. worked
The textbook is for the ____ students, not for the beginners.
A. foreign
B. blind
C. advanced
D. deaf