Up to Tuesday's attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro,______two boys, aged 11 and 13, shot and killed a teacher and four girls.
#72101
A
while
B
where
C
when
D
then
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I am not sure if Tom____ home. If he________, I'll call you.
#41005
A
willcome,willcome
B
comes,willcome
C
will come, comes
D
will come, come
He was educated at the local high school, ______ he went on to Beijing University.
#74460
A
after which
B
after that
C
in which
D
in that
It was not until she collected enough material to create her new novel．
#69945
A
did she beg4n
B
when she began
C
that she began
D
that did she begin