Those Shellfish Allergy Signs Are Often Confused With Flu

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Those Shellfish Allergy Signs Are Often Confused With Flu

"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.

Fish & Shellfish Allergy 101 - Allergylicious

1,408 Shellfish allergy Images, Stock Photos & Vectors | Shutterstock