Lớp 9 Bài 7 Tự luận

The books are ___ into beginner and advance. (category)

The outdoor centre organizes lots of ___ activities for the kids. (energy)

The government will close down some ___ companies. (profit)

Energy ___ reduces your fuel bills and helps the environment. (conserve)

A ___ is a person who takes an active part in the protection of the environment. (conserve)

___ of the new system will take several days. (install)

We need to find a ____ for Sue. (replace)

She made some very helpful ___ but her boss rejected them all. (suggest)

Planes passed overhead with unceasing ___ (regular)

During the war many couples had to endure long periods of ____. (separate)