Starring in the hit show “Daddy. Where Are We Going?”, Kimi, together with the other four kids, _______ popular with many teenagers these days.

A．is

B．are

C．was

D．were

人们常用干冰的 _____来使运输过程中的食品降温，防止食品腐烂变质；冬天瓦片上的霜是 ____ 现象，在这个过程中要 _____ ．