Question

. It’s illegal for anyone under 21 in the USA, the highest drinking age in the world to buy alcohol, and stores or restaurants caught      alcohol to people under the legal age will involve
  their licenses.

A．to sell; to lose

B．to sell, losing

C．selling; losing

D．sold; lost

Answer 1

C

此句考查两个动词的用法：catch somebody doing something（当场抓住某人做事）和 involve doing sth（涉及到做某事，卷入到做某事中），所以选C。