--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,
#58506
A
If
B
Until
C
Unless
D
Before
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--- Mr. Green, I think physics is too difficult for me. ---Tom, work hard, _______ you’ll find it not as difficult.
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A
or
B
but
C
so
D
and
Some wild animals are in danger ________ the loss of living areas.
#57493
A
as
B
since
C
because of
D
because
Go to the Olympic Center by underground instead, ______ you’ll be late for the match.
#56555
A
and
B
unless
C
but
D
or