It was about 600 years ago __________ the first clock was made.
#85410
A
that
B
until
C
before
D
when
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The question that puzzles them is ___they can finish the work on time. 
#84854
A
what it is that
B
what is it that
C
how is it that
D
how it is that
It was yesterday ____ I saw her and it was almost 10 o’clock ____ she arrived.
#85078
A
when; when
B
that; that
C
when; that
D
that; when
______ is it _____ has made Peter _____ he is today?
#85514
A
What; that; that
B
That; that; what
C
What; what; that
D
What; that; what