—I hear your brother will enter Tsinghua University this summer.
—Exactly,he was a born genius.He was able to read and write ________ the age of 4.( )
A.inB.onC.atD.of
It gets cold at night. ___ you don't wear your coat,you'll catch a cold.( )
If
How
While
Unless
Alice, will you take a taxi to the party with us?
_______. I'll take a bus there.( )
That's right
No, thanks
You're welcome
I don't think so
It's very dangerous to swim in the pool. Look at the sign.
Oh,I ____ notice it. Thanks for telling me.( )
won't
don,t
haven't
didn't
It' s a good habit for us that we should never____( )
put off
put on
turn off
turn on
﹣ What are you going to do next week?
﹣I am not sure. I _______ work in an old peopled home.( )
must
may
should.
can