Do you still remember the rider and his new bike       we saw in the street last week?
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A
which
B
who
C
that
D
whom
推荐题目
The river, ____ are covered with trees, is very long.
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A
which banks
B
of which banks
C
whose the banks
D
the banks of which
People are recycling many things which they      away in the past.
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A
had thrown
B
will be throwing
C
were throwing
D
would have thrown
There are 104 elements found in nature, ___ are metals.
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A
most of it
B
that
C
most of which
D
mostly