It was several years later________ an American ship paid the first official visit to the island.
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A
since
B
when
C
that
D
as
推荐题目
Patience is a kind of quality—and that is ____ what it takes to do anything well.
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A
what
B
which
C
that
D
How
Scientists say it may be five years ______ it is possible to test this medicine on human patients．
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A
since
B
until
C
before
D
when
They are determined to work out the task,____difficult it is.
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A
however
B
no matter what
C
no matter what
D
whatever
It doesn’t matter how many times you fail；_________ matters is how many times you stand up and try again．
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A
which
B
that
C
who
D
what