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—Would you like to go hiking with us this Sunday? —Sure, _______ I am busy.
#57786
A
until
B
when
C
unless
D
since
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 --- Look, what a heavy rain! What shall we do now? --- ____________ it’s raining hard, let’s stay at home to surf on the Internet.
#57779
A
So
B
Since
C
Though
D
If
He was riding to school         it began to rain.
#58056
A
as
B
so
C
while
D
when
--- Look! Lots of  people there. What’s wrong?--- An old lady was going across the road ________ a car hit her.
#57346
A
while
B
as
C
whether
D
when
Most students watch TV three ____four times a week.
#56094
A
and
B
but
C
or
D
however
His father and mother ____ teachers.
#55700
A
are all
B
are both
C
both are
D
all are