3 O: I hope so. I __________ her the birthday present I've just bought her because I __________ here for her party tomorrow.

Краткое пояснение:

Решение:

1. «I am going to give / might give her the birthday present» — говорящий хочет дать подарок, это его намерение. Используем am going to give.

2. «because I am not / won't be here for her party tomorrow» — говорящий сообщает, что его не будет на вечеринке завтра. Используем won't be.

Ответ: I hope so. I am going to give her the birthday present I've just bought her because I won't be here for her party tomorrow.