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Many people believe we will face environmental disasters _________ we completely change the way we live.
#57124
A
but
B
though
C
unless
D
until
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Although they feel tired,__________they still go on working.
#56350
A
and
B
but
C
/
D
so
____________ our football team failed in the match, we did our best.
#58436
A
Though
B
But
C
Because
D
As
I like the shirt,        it’s too expensive.
#58244
A
or
B
so
C
but
D
and
He was riding to school         it began to rain.
#58056
A
as
B
so
C
while
D
when
– _________ do you go to your school library?– Three times a month
#58110
A
How long
B
How often
C
How much
D
When