Ôn Reading - DISCOVER ECO-ADVENTURE WITH US!

(1)

• who

• whom

• whose

• which

(2)

• in

• on

• at

• by

(3)

• a

• the

• an

• no article

(4)

• Despite

• While

• Because of

• Instead of

(5)

• protect

• develop

• increase

• destroy