On his way home yesterday , Tom was hit on the head_____he had time to realize what was happening .
#34827
A
since
B
before
C
when
D
until
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It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
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since
B
before
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after
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The most favorite room is the tidy study with a fireplace, _____we can watch TV and enjoy the nice scenery outside.
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where
B
when
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that
D
which
What the doctors really doubt is my lather will reeover from me serious disease soon.
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A
whether
B
when
C
why
D
how