Learn Hardcore Arabic (Levantine): حملت الكرتونة.

ح is a stronger, deeper h than English h.
ال is usually pronounced il- or el- in Levantine.
In الكرتونة, the ل of ال is pronounced normally, because ك is a moon letter.
The final ة is usually pronounced -e or -eh in Levantine, so كرتونة sounds like kartūneh.

What tense is حملت?

It is a past / perfect verb form. It refers to a completed action, so the carrying happened in the past.

The basic verb is حمل. In this sentence, حملت is the past form with a -ت ending.

Why is there no separate word for I, you, or she?

Because Arabic verbs often include the subject inside the verb itself.

So instead of saying a separate pronoun every time, Arabic can just use the verb form:

In all of these, the verb carries important subject information. Pronouns are often added only when needed for emphasis or clarity.