These Vitamin B12 Vegan Sources Are Surprisingly Easy To Find

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These Vitamin B12 Vegan Sources Are Surprisingly Easy To Find

"those / these" are determiners and are used before nouns to refer to a particular group of things / people, e.g. these people / those rules / those buildings. Update: 题主问的是What are those? 然后他.

Deva Vegan Vitamin B12 - 2500mcg - Shop Vegan

The Best Vitamin B12 Sources for Vegans | VegFAQs