Although James Cook   the first westerner to have discovered Australia,New Zealand and Hawaii,his travels led to the creation of more accurate and reliable maps for vast parts of the world.
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A
isn’t
B
wasn’t
C
must have been
D
may not have been
推荐题目
. If I had got back 5 minutes earlier, I _________ him.
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A
would see
B
would have seen
C
will have seen
D
had seen
If it _______ next week , the crops would be saved.
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A
rains
B
will rains
C
would rain
D
should rain