Passive voice (present or past)

People usually think that rice (a)   (grow) in China.

But did you know that there's a placein Spain full or rice fields? They (a)   (locate) in north-eastern Spain on the Banks of the Ebro Delta at the Rjet Vell nature reserve.

300 tonnes of rice (a)   (produce) each year.

The first rice (a)   (plant) here in 2003.

Chemicals (a)   (not use) in the fields before 2003 so the rice is organic.

Lots of birds (a)   (help) by the rice fields, including herons and flamingos.

The rice (a)   (buy) in many countries, including Germany.

In 2004 the rice (a)   (give) an organic food award.