C

1. D
2. C
3. A
4. B
5. B

Thay `x=-12` ta được: `(-3).(-12)=3.12=36`

Tony admit/ admitted that he hit/ had hit the other car , but said that he not damage/ hadn’t damaged it

1.  watched
2. were watching
3. arrived - was still sleeping
4. went - were having
5. was walking - saw
6. was playing - was singing
7. rang - was having
8. rained - was carrying
9. mentioned - had never heard
10. were singing - came
11. went - were playing - said - had played
12. told - had lived

\(5^3 .25^3= 5^3 . (5^2)^3 = 5^3 . 5^{2.3}= 5^3 . 5^6 = 5^{3+6}=5^9\)

- Câu đấy mình thấy điền rồi mà nhỉ?

4. can't use
5. couldn't read
6. couldn't open

1. took
2. arrived - weren't
3. said - bought
4. taught
5. started - was
6. donated - was
7. rang - invited
8 did you watch
9. was - used to
10. Did you go