I’m really sorry, Lucy. I ______ to help you, but I was too busy at that time.
#86971
A
meant
B
mean
C
had meant
D
have meant
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 Were it not for the snowy weather, we ________ all right. 
#89373
A
would be  
B
would have been
C
were
D
may be
----I thought you wouldn’t mind.----Well, as a matter of fact I don’t, but you _____ me first.
#89312
A
should ask
B
should have asked
C
must ask
D
must have asked
Without the air to hold some of the sun’s heat,the earth at night   .
#88970
A
would be freezing cold
B
will be freezing coldly
C
would be frozen cold
D
can freeze coldly
—You___________ stop me.—Even if you __________it, I won't allow you to swim across the river.
#90001
A
mustn't; dare not do
B
may ; dare not do
C
can; dare to do
D
needn't; dare do