What were you doing at 9 p.m. last night ?
I was doing my homework
What were you doing at 7 a.m. this morning ?
I was having a breakfast.
What were you doing at 4 p.m. yesterday?
I was talking with my friend in the cafe.
#1.
0. was
1. wasn't
2. was
3. weren't
4. were
5. was
6. were
7. wasn't
8. was
#2
1. Was Christopher Columbus Spanish? No, he wasn't.
2. Was Grace Kelly a famous scientist? No, she wasn't.
3. Was Gustave Eiffel French engineer? Yes, he was.
4. Were Michelangelo and Raphael film directors? No, they weren't.
5. Were the Wright brothers American? Yes, they were.
6. Were John Kennedy and Winston Churchill actors? No, they weren't.
#3
1)
1. I was
2. Was it
3. The food was
2)
4. Was your grandfather
5. He wasn't
6. Was he
7. He was
3)
8. Were you
9. We were
10. Were the children
11. They were
Too ( в значении "слишком") употребляется перед прилагательными и наречиями имеет отрицательное значение.
Enough ("достаточно") употребляется ПОСЛЕ наречий и прилагательных имеет положительное значение.