• discover

• archaeology

• invent

• science

• explorer

• field

• steam engine

• technique

• particular

• solar system

• UFO

• Venus

• alien

• captain

• astronaut

• crew

Find the word which has different sound in the part underlined.

• threaten

• seat

• thread

• bread

If you were the president, what ......… you do to help the environment?

• will

• did

• would

• do

When the policeman came to the scene, the driver of the car …...

• have left

• had left

• leaves

• was left

Scientists have invented new devices to help people live a longer life.

=> New devices ……………………………………………………

• New devices have invented to help people live a longer life by Scientists.

• New devices has invented to help people live a longer life by Scientists.

• New devices have invent to help people live a longer life by Scientists.

• New devices has invent to help people live a longer life by Scientists.

“ I haven’t meet my parents for years.”, he says

=>...................................................................................................

• He says he haven’t met his parents for years.

• He says he hasn’t meet his parents for years.

• He says he hasn’t met his parents for years.

• He says he haven’t meet his parents for years.

Air___________, together with littering, is causing many problems in our cities today.

• pollute

• pollution

• polluting

• polluted