Was it 80 years before Christopher Columbus crossed the Atlantic ______ Zheng He hadsailed to East Africa? 
#84845
A
when
B
that
C
after
D
since
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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
I really don’t know ________ I had my money stolen.
#84976
A
when was it that
B
that it was when
C
where it was that
D
it was where that