B xin k 

1. He has been an English teacher for 20 years 

(-) He hasn't been an EL teacher for 20 years

(?) Has he been an EL teacher for 20 years ?

2. We having an English Test next Monday 

(-) We aren't having an EL Test next Monday

(?) Are you having an EL Test next Monday ?

3. The people were friendly 

(-) The people weren't friendly

(?) Were the people friendly ?

4. Liz enjoyed her summer vacation last year 

(-) Liz didn't enjoy her summer vacation last year

(?) Did Liz enjoy her summer vacation last year ?

5. Nam will be absent from school tomorrow 

(-) Nam won't be absent from school tomorrow

(?) Will Nam be absent from school tomorrow ?

6. She goes to the gym twice a week 

(-) She doesn't go to the gym twice a week

(?) Does she go to the gym twice a week ?

7. My brother has ever spent his summer holiday in England

(-) My brother hasn't ever spent his summer holiday in England

(?) Has your brother ever spent his summer holiday in England ?

đáp án của câu hỏi này là : be
vì a lot of fun là adjective(tính từ), nên cần có động từ tobe 
be ko biến đổi thành are , is hay  am vì đây là thì tương lai đơn

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