II.

$\text{1.}$ would write 

$\text{→}$ Câu cầu ước ở TL: S + wish<es> + S + would + V

$\text{2.}$ didn't visit

$\text{→}$ Câu cầu ước trái với HT: S + wish<es> + S + Ved/ P1/ were.

$\text{3.}$ would change

$\text{→}$ Câu đk loại 2: If + S + were/ Ved/ P1, S + would/ could/ might + V

$\text{4.}$ will get

$\text{→}$ Câu đk loại 1: If + S + V<s,es>, S + will/ can/ may + V.

$\text{5.}$ worked 

$\text{→}$ Câu đk loại 2

III.

$\text{1.}$ interested

$\text{→}$ be interested in + N/ V-ing: quan tâm

$\text{2.}$ competition: cuộc thi

$\text{3.}$ gently: dịu dàng

$\text{→}$ sau V là Adv

$\text{4.}$ boring 

$\text{→}$ Adj chỉ vật có đuôi -ing; chỉ người có đuôi -ed

IV.

$\text{1.}$ It's such an expensive car that I can't buy it.

$\text{→}$ such + N + that

$\text{2.}$ It's such an useful dictionary that I can't help buying it.

$\text{3.}$ The water is very hot so we can't drink it.

$\text{→}$ so: vậy nên

$\text{4.}$ I haven't called her for 5 days.

$\text{→}$ The last time + QKD + was + time = S + have/ has + not + Ved/ P2 + for/ since

$\text{5.}$ I used to smoke.

$\text{→}$ no longer: ko còn ⇒ đã từng

$\text{→}$ used to + V: đã từng