Three language riddles from New York. 🗽🇺🇸

I have just returned from an awesome vacation in New York. Here are three language riddles from my trip.

1️⃣ What was the only question the customs officer asked me?

2️⃣ What's arguably the most useful phrase that you will need probably every day that no course book teaches you?

3️⃣ When you are buying a meal, the cashier will ask you this question: "_______ or to go?" What's the missing part?

Drop your ideas in the comments. 📝

Btw, since I'd been to New York many times before, I wasn't trapped in the tyranny of having to explore the usual touristy places and enjoyed the city off the beaten track—and fell even more in love with it as a result 💜. So, if you need advice, dm me.