He arrived home late _____the heavy rain．
A．since B．because C．because of
There are more than_____teachers in our school．
A． three hundreds of B．three hundred C．three hundred of
----_____did you tell him about the news?
----By_____an e-mail．
A．How；sending B．How；sent C．What：sending
_____Friday afternoons，many students are sleepy after a long week of classes．
A．In B．On C．At
There is _____“U”in_____word“UFO”．
A．an；a B．a；the C．an：the
My friends and I______ go to the movies on weekends．
A．not allow to B．don’t allow to C．aren’t allowed to
