Although he was in poor health, Robert succeeded other more famous engineers failed.
#30585
A
which
B
that
C
what
D
where
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Mary was much kinder to Jack than she was to the others, , of course, made all the others upset.
#32932
A
who
B
which
C
what
D
that
He was about to tell me the secret _________ someone patted him on the shoulder.
#31950
A
as
B
until
C
while
D
when
--You will get into big trouble ____ you can’t prove that you didn’t cheat in the exam.--I know. I will collect enough evidence to make them believe me.
#31015
A
unless
B
when
C
although
D
while