Похоже, здесь нужно выбрать правильную форму глагола. Давай разберёмся с заданиями:
It's necessary for Frank to finish the report by the time you get back.
I wish I hadn't told John what you said.
I'll do the shopping when I get back.
We've decided to visit my friend Kim in London.
Have you finished writing my CV?
It will be nice to see Frank again.
Enter the competition. I think you'll do well.
Jim looks contented today. He must have done really well.
I won't forget to bring you the book.
I wouldn't have tried bungee-jumping if I hadn't gone with Helen.
Постарайся проанализировать каждое предложение и выбрать вариант, который лучше всего подходит по смыслу. Если запутаешься, мы можем ещё раз обсудить!