$\text{1.}$ I last went to Portugal was in 1990.

$\text{→}$ S + have/ has +  not + Ved/ P2 $\text{=}$ S + last + Ved/ P1 + was.

$\text{2.}$ How long have you started your course?

$\text{→}$ When + did + S + V? $\text{=}$ How long + have/ has + S + Ved/ P2?

$\text{3.}$ She repaired the car by herself.

$\text{4.}$ We had not been to Chicago before.

$\text{→}$ S + Ved/ P1 + for the first time $\text{=}$ S +  had not/ hadn't + Ved/ P2 + before.

$\text{5.}$ I know it's theirs, because there is a label on it.

$\text{→}$ Theirs  $\text{=}$ belong to them

$\text{6.}$ The cupboard has 14 jars.

$\text{7.}$ I'm going to start studying in Australia.

$\text{→}$ be going to $\text{=}$ plan to-V

$\text{8.}$ It is difficult to colve this problem.

$\text{9.}$ Will you go to lunch with me?

$\text{10.}$ Liz occasionally goes dancing.

$\text{→}$ occasionally $\text{=}$ do/ does + not very often 

1. I last went to Portugal was in 1990.

2. How long have you started your course?

3. She repaired the car by herself.

4. We had not been to Chicago before.

5. I know it is theirs, because there is a label on it.

6. The cupboard has 14 jars.

7. I'm going to start studying in Australia.

8. It is difficult to colve this problem.

9. Will you go to lunch with me?

10. Liz occasionally goes dancing.

VOTE 5 SAO + CẢM ƠN VÀ CHO MK XIN CÂU TRẢ LỜI HAY NHẤT NHÉ!