Don’t stop working _____ twelve. 
#58157
A
to
B
at
C
when
D
until
推荐题目
—__________ do you cook for your family?—Sorry, never.
#56172
A
How much
B
How many
C
How often
D
How old
If you live near the shopping mall, you _______go far to buy things.
#58207
A
have to
B
haven’t to
C
don’t have to
D
needn’t to
Don’t get off the bus ________it has stopped.
#55561
A
until
B
if
C
because
D
though