The weather is really terrible these days. Tell the children to be.Don’t have a cold..A. l

问题补充：

The weather is really terrible these days. Tell the children to be.

Don’t have a cold..

A. lucky

B. friendly

C. comfortable

D. careful

答案：

A. lucky

B. friendly

C. comfortable

(答案→)D. careful

解析：be系动词，后跟形容词，根据上文可知天气不好，告诉学生要小心