~ ( Chúc bạn học tốt ^^ ) ~
I)
1) learned
2) don't have
3) attend
4) will die
5) doesn't have
6) was not
7) will be clean
8) wasn't
II)
1) I told a joke, but nobody laughed.
2) You must study harder or you will go into another class.
3) The city suffers from air pollution and water pollution.
4) I knew her family, so I did what I could for her.
5) We can't afford energy-saving light bulbs because the light bulbs are too expensive.
