Нужно только ОБЪЯСНЕНИЕ, а не решение:)
Ибо перевод у фраз под буквами, как я поняла один и тот же, почему же надо соотносить?
1. This is a disaster,
2. You can't see it,
3. This story isn't true,
4. My parents are really happy,
5. Steve told her,
6. I could join as well,

a. couldn't i?
b. aren't they?
c. didn't he?
d. can you?
e. isn't it?
f. is it?