The coronavirus had already overwhelmed China, South Korean, Iran, Italy,.....?

A. Hadn't it

B. Hasn't it

C. Didn't it

D. Wasn't it

Chọn B

Giải thích : trong câu có dấu hiệu  already và it là đại từ nhân xưng số ít

Học tốt !!!!!!!!

em ko bít, em mới có lớp 5

1 Tom invited us to come to his party. ? A hadn't he B couldn't he C wasn't he D didn't he 2 there was an exciting football match on tv last night. ? A wasn't it B was not there C wasn't there D was it 3 I am not to falt. ? A aren't I B do I C am I D are I 4 I'm wrong. ? A am not B Aren't IC are not D amn't

It was not until ... that ..., sau "that" nhớ bỏ (didn't) nhưng các trường hợp (couldn't/ weren't/ wasn't/ hadn't) sau that chỉ bỏ "not" mà thôi.

43. The little girl didn't open the gifts until the last visitor left.

→ It was not until the last visitor left that the little girl opened the gifts.

44. He didn't get married until he was forty.

→ It was not until he was forty that he got married.

45. He hadn't been a famous singer before he went to HCM city.

→ It was not until he went to HCM city that he became a famous singer.

46. She didn't begin to learn English until 1980.

→  It was not until 1980 that she began to learn English

was not until his father threatened to punish him that the boy told the truth.

was not until the patient received that new treatment that her heart condition improved.

was not until he felt too tired that he stopped working.

was not until they had some proof that the police made some accusations.

51. It wasn't until his father came home that the boy did his homework

52. It wasn't until his father came home that he could go to school

53. It wasn't until she was 15 that Lan could study English

54. It wasn't until he was forty that Nam could buy a house of his dream

55. It wasn't until she taught at the university that she had been a good teacher

56. It wasn't until he married Marry that he had been a bad husband

57. It wasn't until her manager knew the truth that Anna was punished

58. It wasn't until he failed this exam that Hieu studied hard.

47. We didn't study English until we began primary school.

\(\Rightarrow\) It was not until we began primary school that we studied English.

48. I didn't learn English until 2002.

\(\Rightarrow\) It wasn't until 2002 that I learned English.

49. He didn't know how to swim until he was 30.

\(\Rightarrow\) It It was not until he was 30 that he knew how to swim.

50. They didn't begin to learn English until 1980.

\(\Rightarrow\) It It was not until 1980 that they began to learn English.

1.If it had been cold,...

2.If John had came,...

3.Claire would have bought .....

4.If the joke hadn't been funny...

5) hình như đề sai :WE wouldn't have left it if it hadn't been really noisy

tất cả là câu đk loại 3

1. was 

2.came

A:didn't->wasn't

B:isn't->wasn't

A:it->they

B:it->they

A:they->it

hk tốt

A:didn't->wasn't

B:isn't->wasn't

A:it->they

B:it->they

A:they->it

1.The weather forecast was inaccurate,so we didn't take the right precautions.

-Had the weather forecast__not been inaccurate, we would have taken the right precaution._____

2.I am sure it wasn't Nam's fault.

-It can't_____have been Nam's fault. ______

3.I'm sure it was Mai who cleared everything up.

Mai must ____have cleared everything up_____________.

4. I applied for the job but it was turned down.

-My ________application for the job was turned down_________

5. The Pacific Ocean is on average deeper than the Atlantic.

-- The average ___depth of the Pacific Ocean is greater than that of Atlantic Ocean_________

1.The weather forecast was inaccurate,so we didn't take the right precautions. -Had the weather forecast been accurate, we would have taken the right precautions

2.I am sure it wasn't Nam's fault. -It can't have been Nam's fault

3.I'm sure it was Mai who cleared everything up. Mai must have cleared everything up. 

4. I applied for the job but it was turned down. -My application for the job was turned down 

5. The Pacific Ocean is on average deeper than the Atlantic. -- The average depth of the Pacific Ocean is greater than that of the Atlantic

1.The weather forecast was inaccurate,so we didn't take the right precautions. -Had the weather forecast been accurate, we would have taken the right precautions

2.I am sure it wasn't Nam's fault. -It can't have been Nam's fault

3.I'm sure it was Mai who cleared everything up. Mai must have cleared everything up. 

4. I applied for the job but it was turned down. -My application for the job was turned down 

5. The Pacific Ocean is on average deeper than the Atlantic. -- The average depth of the Pacific Ocean is greater than that of the Atlantic