______ is known, he is such a beloved teacher ______ we students all expect.
A. That, which
B. Which, as
C. As, as
D. As, that
When Harrison's clock was first made,______.
A. it could tell the time at sea
B. it could tell sailors where they were
C. both A and B
D. every country in the world set the time by it besides A and B
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