Unit4

wood is a ______________ used for making furniture

• irrigation

• substance

• desalination

There is a stream in front of my house

• stream

• critical

• desalination

We need to build a new ___________ plant

• critical

• stream

• desalination

The patient is now in a _____________ condition

• desalination

• critical

• substance

water is _____________ for human being

• essential

• stream

• desalination

The new __________ project will help us to produce maximum vegetables

• irrigation

• desalination

• substance