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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There were two boys in the lab, did the experiment successfully.
#73272
A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
We agreed to accept they thought was the best professor in the college .
#74176
A
Whatever
B
whomever
C
whichever
D
whoever
