______are you staying there—Just for two days.

I think saving water is more important thanrecycling paper in our daily life.— I disagree. Recycling paper is saving water.

Please give me ______ to write on.

I hear ________ foreign students will come to our school this year.—Right. They are the ______ exchange students.

Those old soldiers never laugh or smile and try to appear very serious ________ what they are ________ is very funny.