It is _____ he often fails in exams _____ makes his parents worried about him.
#84753
A
what; that
B
that; what
C
that; that
D
/; that
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It was ______ back home after the experiment. 
#85256
A
not until midnight did he go
B
until midnight that he didn’t go
C
not until midnight that he went
D
until midnight when he didn’t go