Bài 1.Mark the stressed syllable in each work. 
1. o'bese.                               3. e'cology 
2. de'gree.                              4. ge'ography 
Bài 2. Change these sentences into the passive voice. 
1, Mr. Smith will collect the tickets. The tickets..will be collected by Mr.Smith.. 
2, A local artist painted the picture.   The picture was painted by a local artist....
Bài 3. Make conditional sentences type 2 from tthe clues. 
1, if/there/be/no/war/,people/live/more/happy.
-> If there is no war, people will live more happier
2, if/I/be/you/, I / plant/ vegetables / garden. 
-> If I was you, I will plant vegetables in the garden
3, More/ tourist/ come/ here/ if/ beach/ be/ cleaner. 
-> More tourist will come here if the beach is cleaner