A computer is very popular and helpful .— I think so. It _______ in many different fields.

Which of these two English books will you borrow? – I’ll borrowof them. Because they are very interesting.

The Greens bought a big house _______ has a swimming pool and a garden.

Though they are far away from school, the children who live in mountains ______ go to school on foot.

What do you think of Black Coal, Thin Ice?–It’s a good film., it is not suitable for teenagers.