(2013·安徽，21)From space, the earth looks blue.This is ________about seventy－one percent of its surface is covered by water.
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A
why
B
how
C
because
D
whether
推荐题目
__________ entered the office when he realized that he had forgotten his report.
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A
He hardly had
B
Had he hardly
C
Hardly had he
D
Hardly he had
Our hometown is quite different from _______before.
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A
that is was
B
what it was
C
which it was
D
when it was
It was April 29, 2011 _____ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.
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A
that
B
when
C
since
D
before
One of the reasons____ he explained to us was ______ he had dreamt of doing so.
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A
why; that
B
that; that
C
why; because
D
that; because
Evidence came up ________ specific speech sounds are recognized by babies as young as 6 months old.
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A
what
B
which
C
that
D
whose