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We’ll have a picnic in the park this Sunday ________ it rains or it’s very cold.
#30506
A
since
B
if
C
unless
D
until
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They kept trying _________ they must have known it was hopeless.
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if
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because
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when
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where
It was not until he came back _____ he knew the police were looking for him.
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which
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________ we know, the moon goes around the sun.
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As far as
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He’s been sitting there in the restaurant for more than an hour, not making any trouble ________ anything either.
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and not order
B
but not to order
C
but not ordering
D
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                food is hard to find, few birds remain throughout the year.
#31718
A
Although
B
Where
C
Unless
D
When