1. more precious

2. thinner

3. more expensive

4. warmer

5. better

6. more pleasant

7. the highest

8. stronger

9. fatter

10. the largest

11. more studious

12. worse

13. the funniest

14. the least

15. happier

1.had completed/gave

2.spoke/hadn't finished

3.rang/had already left

1.was

1.explorations

2.surface

3.invention

4.planet

5.difference

6.region

7.climate

8.languages

When was the last time you saw an action movie?

A.rock

a) A=9x²-6xy+2y²+1

    A=(3x)²-2.3x.y+y²+y²+1

    A=(3x-y)²+(y²+1)≥0

Câu b, c tương tự câu a

1.Ann is very upset because the local authorities have turned down her proposals to install solar panels to supply electricity for traffic lights.

2.A committe has been set up to examine the question.

3.Our class football team lost the match, so we tried to cheer them up,

4.''Can I wear jeans at wedding party?'' - ''Of course not.You'll have to cover up smart clthes''

5.Before I come to a decision, I'll have to think over their offer very carefully.

1.A.artefacts

2.C.heritage

3.A.of

4.B.on

5.A.in orfer

6.C.while

7.D.picks

8.D.back

9.B.great.I'll see you then

10.A.sounds great.