— Why did the dinner party start so late last night?— It was _____ that caused him to serve dinner an hour later than usual. 
#85460
A
we were late
B
we being late
C
our being late
D
because we were late
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It was in the lab _____ was taken charge by Professor Wang ______ they did the experiment.
#85094
A
where, that
B
that, which
C
that, where
D
which, that
It was until last year that he ______.
#85401
A
left his home town for a new start  
B
came to realize the importance of leaving English
C
worked as an English teacher at a middle school  
D
set out to build a new house of h his own