NEGATIVE
1. he was not having an English teacher 20 year ago.
2. We are not having an English test next Monday
3. The people were not friendly
4. Liz did not enjoy her summer vacation last year
5. Nam will not be absent from school tomorrow
5. She does not go to the gym twice a week
6. My brother has never spent his summer holiday in England
INTERRGOGATIVE
1. was he having an English teacher 20 year ago.
2. are We having an English test next Monday
3. were The people friendly
4. did Liz enjoy her summer vacation last year
5. will Nam be absent from school tomorrow
5. does She go to the gym twice a week
6. has My brother ever spent his summer holiday in England