81, The last time I met her was a week ago

- The last time + S + V2 + was + thgian + ago : Lần cuối cùng

82,  Although the festival took place in a remote area, a lot of people attended....

- Although + clause, clause : Dù

83, The exam wasn't as easy as we thought

- SSNB : S1 + be + as + adj + as + S2...

84, Her father is a slow cyclist

- Be + a/an + adj + N

85, We spent over seven months revising for this exam

- Spend + thgian + V-ing : Dành thời gian làm gì

`81`. The last time I met him was a week ago.

`-` The last time + S + V-ed/c2 + was + time + ago

`82`. AĐúng

`83`. The exam wasn't as easy as we thought.

`-` So sánh bằng phủ định: S1 + be + not as + adj + as + S2

`84`. Her father is a slow cycler.

`-` S + be + (a/an) + adj + N

`85`. We spent over seven months receiving for this exam.

`-` S + spend + time + V-ing: dành bao lâu làm gì