This machine is very easy ______. Anyone can learn to use it in a few minutes.
You must have waited here for a long time, __________?
Miss Lin____________ a lot of work for the poor area since 2010.
How many students are there in your class?—- __________ number of the students in our class __________ 40.
What will you do after school this afternoon? —I ______ basketball with my friends.