Tony was drawing a picture_______ I was doing my homework.( )
if
because
while
until
Our teachers don't allow us ______ mobile phones in the school.
to use
use
using
- How clean the roads are!
- They ______ by the hard﹣working cleaners every day.
are cleaned
clean
will clean
- Jack,how do you like the new movie Hi,Mom!directed(导演) by Jia Ling?
- Well,it's really a funny movie.I ______ it for three times.
am watching
will watch
have watched
My father always tells me never to ______ when I am in trouble.
give up
put on
help out
- Hey,Clark.Would you like to have a picnic with us this weekend?
- Sorry,I'll have an exam next Monday,so I ______ prepare for it.
can
may
must