he your math teacher.
You ______ cross the street when the traffic lights are red.( )
needn't
don't have to
mustn't
I won't go home ______ the rain stops.( )
since
so
until
﹣Do you know ______ boy over there?
Yes,he is my brother,Li Lei.( )
the
an
a
Would you like to go to the movies with me this Sunday?
________.I'll be free that day.( )
Sorry,I can't.
Yes,I do.
Yes,I'd love to.
No,I wouldn't.
Thanks to the government,several new primary schools ________ in my hometown last year.( )
build
built
are built
were built