She didn't leave the school __________ she worked out this problem.( )
as long as
until
since
while
When will Mr.Green ________ Beijing?
In a week.( )
reach
get
arrive
come
﹣Who bought the birthday cake for you?
﹣Oh! My daughter made it by .( )
A.himselfB.itselfC.herselfD.myself
Have you ever been to America?
No,I have been there.( )
often
never
usually
sometimes
John, don't throw the rubbish on the floor. We should keep the school .
Oh, sorry. I won't do it again.( )
busy
noisy
dirty
clean
Can I help you?
Yes, please. I need a pair of .( )
shoes
T﹣shirt
sweater
bags