34. B; 35. D; 36. B; 37. D; 38. C; 39. B

Giải thích:

`34)` Câu điều kiện loại 3:  [If + thì quá khứ hoàn thành],  [would + have + V3/V-ed]

`35)` Cấu trúc Wish ở quá khứ:

Khẳng định: S + wish(es) + (that) + S + had + V3

Phủ định: S + wish(es) + (that) + S + had not + V3

Cấu trúc If only: If only + (that) + S + had (not) + V3

`36)` Cấu trúc Wish ở hiện tại :

Khẳng định: S + wish(es) + (that) + S + V-ed

Phủ định: S + wish(es) + (that) + S + not + V-ed

Cấu trúc If only: If only + (that) + S + (not) + V-ed

`37)` Tương tự câu `35.`

`38)` Cấu trúc ‘would rather’ với 2 chủ ngữ:

Cấu trúc ‘would rather’ ở hiện tại hoặc tương lai 

Khẳng định (+): S1 + would rather (that) + S2 + V-ed

Phủ định (-): S1 + would rather (that) + S2 + not + V-ed

Nghi vấn (?): Would + S + rather +  S2 + V-ed

 Cấu trúc ‘would rather’ ở quá khứ 

Khẳng định (+): S1 + would rather (that) + S2+ had + V3

Phủ định (-):S1 + would rather (that) + S2+ hadn’t + V3

Nghi vấn (?): Would + S + rather +  S2 + had + V3

`39)` Câu trực tiếp -> gián tiếp

Câu 34. If I had known you would come, ______.

A. I would wait for you

B. I would have waited for you

C. I will wait for you

D. I would not have waited for you

-> Câu điều kiện loại 3

Câu 35. I wish I ________ a trip to London last year.

A. took

B. will take

C. take

D. had taken

-> Câu ước loại 2

Câu 36. She wishes she __________ a lot of money now.

A. will have

B. had

C. had had

D. has

-> Câu ước loại 1

Câu 37. The weather was terrible. I wish it _____ warmer.

A. has been

B. was

C. were

D. had been

-> Câu ước loại 2

Câu 38. I'd rather you __________ in here.

A. don't smoke

B. won't smoke

C. didn't smoke

D. not smoked

-> Cấu trúc với 'would rather' S1 + would rather (that) + S2 + not + V-ed

Câu 39. He talked as if he ______ where she was.

A. were knowing

B. had known

C. knew

D. would know