41. B

Dẫn chứng: Dòng 4

42. A

memorize = remember: nhớ 

43. C

Dẫn chứng: Dòng cuối 

44. B

Dẫn chứng: Dòng 2

45. A

A: cách học tiếng Anh một cách hiệu quả 

46. She said that she was working in a restaurant.

S + said (that) +S + V (lùi thì)

HTTD --> QKTD

47. I haven't spoken to her for two years.

S + has/have + not + V3/ed + for/since + time 

= It's / has been + time + since + S + (last) + V2/ed 

48. A new computer has been bought by my father.

S + has/have + been + V3/ed: bị động - HTHT

49. Unless you pass your exam, you won't get into university.

Unless: trừ khi = if ... not 

if 1: if + HTĐ, TLĐ

50. I wish I had gone to the airport to say goodbye to her.

S + wish(es) + S+ had + V3/ed: ước ở quá khứ 

`color{orange}{~MiaMB~}`