Complete IELTS Bands 4-5 Unit 4

______ increased by 20% after they installed air conditioning.

• Factor

• Output

The _____ produces more than 500 cars a day.

• plant

• device

Scientists have ______ a new type of motor which runs on ethanol.

• designed

• spread

Biologists have been ______ with bacteria which will eat plastic.

• attempting

• experimenting

The cars are _____ at a factory outside Beijing.

• demonstrated

• assembled

The ______ of the puzzle is to make each side of the cube the same colour.

• object

• layer

The machine was installed sucessfully.

• successfully

• sucesssfully

• successfuly

• successffully

She works in an ofice with three other employees.

• offiice

• office

• officee

• offise

Teachers get annoyed when students don't pay atention.

• attentionn

• attenton

• atteention

• attention

Appart from university students, few people are affected by the new regulations.

• Appart

• Apart

• Apartt

• Aparrt