Learn Farsi: همه‌ی تخم‌مرغ‌ها داخل سبد است.

Yes! Just like ba'zi (some), the word hame (all) acts as an indefinite pronoun and uses the Ezafe to connect to the noun. Because hame ends in a silent heh (ه), we use the -ye form of the Ezafe, making it hame-ye tokhm-morgh-ha (all of the eggs).

Why is the verb singular (ast) when the subject (tokhm-morgh-ha) is plural?

In Farsi, inanimate plural subjects—things that aren't people, like eggs, chairs, or cars—usually take a singular verb. Since eggs are inanimate, we use the singular ast (is) instead of the plural hastand (are).

How does dakhel (inside) connect to sabad (basket) here?

It connects using the Ezafe! Location words like dakhel (inside), birun (outside), or ru (on) require the Ezafe (an "e" sound) to link to the noun that follows them. When spoken, it's pronounced dakhel-e sabad (literally: inside of basket).

I see the plural marker -ha at the end of tokhm-morgh. Why isn't it attached to the first part of the word?