Intro to Italian: Subject Pronouns Test

What is the Italian subject pronoun for "They" in the following sentence:
They are my best friends.

• Loro
• Voi
• Noi
• Tu

Talking about Elena & Julia

• lei
• voi
• noi
• loro

You (formal)

• lei
• Loro
• tu
• Lei

How do you say: I

• tu
• io
• noi
• lui

How do you say: you

• lei
• tu
• voi
• io

How do you say: she

• lui
• Lei
• lei
• noi

How do you say: we

• io
• noi
• loro
• voi

How do you say: you all

• voi
• noi
• loro
• tu loro

How do you say: they

• io
• voi
• noi
• loro

Which set of pronouns all refer to one person? (singular)

• lui, lei, io
• tu, lei, noi
• noi, loro, voi
• loro, tu, io