Safety in school has been of great concern (关注) because of recent reports about accidents _____ students got injured or killed at school.
#69660
A
for which
B
when
C
which
D
in which
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There is no doubt _______ international cooperation is the key to _______ with cyber crime.
#67746
A
whether; doing
B
that; dealing
C
whether; do
D
that; deal
The data shows __________ successful people have in common is _______ they have perseverance.
#69333
A
that, that
B
what, that
C
what, what
D
all, because
You should be more confident in______ situation is challenging you.
#67640
A
wherever
B
whenever
C
however
D
whatever