猫会让他打喷嚏——我想他对猫过敏。

Cats make him ___sneeze - I think he's allergic to them.

生病时，我们往往会更频繁地打喷嚏。

When sick, we tend to ___sneeze more often.

打喷嚏时捂住鼻子是礼貌的。

It's polite to cover your nose when you ___sneeze.