Какие глаголы не употребляются в прошедшом времени?

What will our planet look like if we ________our nature?
A didn't protect B won't protect C don't protect
What would we have done if his father _______rich?
A wasn't B hadn't been C hasn't been
If I _____you, I would apologize first.
A were B am C be
If he ______the coffee, it would be sweeter.
A had stirred B have stirred C stirred
If we had enough petrol, we______there before night.
A got B get C will get D would get
If the doctor didn't operate on him ,he________.
A would die B will die C would have died
If it_____not so foggy, we should reach the station on time.
A is B were C was
What would have happened if Ralf______his head?
A lost B has lost C had lost
I shall easily repair the fence if I ______a hammer
.A will have B have C had
I______you if you didn't write letters.
A will miss B miss C would miss

young man when he (arrive) . Заранее спасибо ! Пожалуйста объясните !

Lera....iots of fun last summer/ she.....to the seaside. She.......and.....in the warm water. She...dolphins and.........seashells. She.........sand volleyball with her friends and ........a bike/ She ............a fun fair and ........jn a roller coaster! She.........time to watch television/ But last week she ..........three mishaps/ She.............to swim but the water .........too cold. She...........to ride a bike but wheels..........flat. She..........to watch TV but the programme ......boring. What went wrong?

man when he (arrive) . Заранее спасибо ! Пожалуйста объясните !

Какой глагол не является неправильным?
1]take
2]give
3]fall
4]talk