—   do you have an Art Festival in your school? —Once a year.
#56324
A
How long
B
How often 
C
How far
D
How soon
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—Look! Lily and Sally are cleaning the school laboratory.—Let’s go and join them.       .
#55123
A
Many hands make light work
B
The early bird catches the worm
C
A friend in need is a friend indeed
D
The grass is always greener on the other side
Don’t worry! I’ll send you an e-mail              .
#57193
A
as soon as possible
B
as soon as possibly
C
as soon as can
D
as quick as possible