Sentences, run-ons, or fragments

Which of these isn't a complete sentence?

• I hope that, when I've built up my savings, I'll be able to travel to Mexico.

• Did you know that, along with gorgeous architecture, it's home to the largest tamale?

• Wouldn't it be lovely to enjoy a week soaking up the culture?

• Once you know all the most difficult elements.

There is so much to understand.

• Sentence

• Sentence Fragment

We had a three-course meal.

• Sentence Fragment

• Sentence

Commemorative stamps are issued to give recognition to someone or something special.

• Sentence

• Sentence Fragment

Stamps with pictures of animals or famous people.

• Sentence

• Sentence Fragment

A block of four different, colorful stamps that commemorate Earth Day.

• Sentence

• Sentence Fragment

I like "Love" stamps and holiday stamps.

• Sentence Fragment

• Sentence

Because all four of the winning designs for the Earth Day 1995 stamps were created by young people.

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When my parents buy stamps.

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• Sentence

You are good at working from home.

• Sentence

• Sentence Fragment