Question

Продолжить предложения
We‘ll never know the reason why…
I prefer working on projects which/when…

Answer 1

Ответ:

We will never know the reason why he went missing in December

I prefer to work on projects that I started doing myself when I was young

Объяснение:

вроде так

Answer 2

Ответ:

We'll never know the reason why who created us

I prefer working on projects when will help us find out where humanity came from