làm giúp mik vs ah 
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Question 15. We began eating when it started to rain.
A.We have eaten when it started to rain.
C.We have eaten since it started to rain.
B. We have eaten since it has rained.
D. We have been eating when it started to rain.
Question 16. Linda and Peter have been living in Japan for a long time.
A. Linda and Peter have lived in Japan for a long time.
B. Linda and Peter stared to live in Japan a long time ago.
C. Linda and Peter began to live in Japan a long time ago.
Question 17. I have been learning English since I was at primary school.
A. I started learning English since I was at primary school.
B. I started learning English when I was at primary school.
C. I start learning English when I was at primary school.
D. I began learning English since I was at primary school.
Question 18. My friend has read this book since she heard of it.
A. My friend started to read this book since she heard of it.
B. My friend started to read this book when she heard of it.
C. My friend began to read this book since she heard of it.
D. My friend has read this book when she heard of it.
Question 19. I started to work here at noon.
A. I have worked here at noon.
C. I have been working here at noon.
Question 20. We have never eaten this kind of food before.
A. It's the tastiest food we've ever eaten.
B. I have worked here since noon.
D. I began to work here since noon..
D. All are correct.
C. We've never eaten such a good food before.
Question 21. This is the first time I have seen this film.
A. I have ever seen this film before.
B. It's the first time we've ever eaten this kind of food.
D. The food is so good that we've never eaten before.
OT
B. I have never seen this film before.
D. I have not seen this film.
C. I have never seen this film.
Question 22. This is the first time he has been abroad.
A. He has been abroad for the first time.
C. He hasn't been abroad before.
Question 23. This is the first time my British friends have ever used chopsticks.
A. My British friends have never used chopsticks before.
B. My British friends have ever used chopsticks before.
C. My British friends did not use chopsticks before.
D. My British friends have never used chopsticks.
B. He has been abroad before.
D. The first time he was abroad was this time.
Question 24. This is the first time Ad and Kate have ever eaten raw fish.
A. Ad and Kate have ever eaten raw fish before.
C. Ad and Kate have never eaten raw fish.
Question 25. She hasn't had a swim for five years.
A. She last had a swim five years ago.
C. It is five years since she last had a swim.
B. Ad and Kate has not eaten raw fish before.
D. Ad and Kate have never eaten raw fish before.
Question 26. They last talked to each other two months ago.
A. They haven't talked to each other for two months.
B. It's two months since they last talked to each other.
C. The last time they talked to each other was two months ago.
D. All are correct.
B. The last time she had a swim was five years ago.
D. All are correct.
Question 27. The last time she saw her elder sister was in 2019.
A. She didn't see her elder sister from 2019.
B. She has seen her elder sister since 2019.
C. It was not until 2019 that she saw her elder sister.
D. She hasn't seen her elder sister since 2019.
Question 28. She hasn't written to me for years.
A. It's years ago since she wrote to me..
B. It's years since she wrote to me.
C. It's years since she last wrote to me.
D. It has been year since she wrote to me.