Question

【题目】Do in case of fire and find the safe way out.

A. keep cool B. keeping cool C. not stay calm D. staying calm

Answer 1

【答案】A

【解析】句意：万一起火，务必要冷静，找到安全出口。考查强调谓语动词，do/does/did+动词原形，表示确实、务必、一定。本句是祈使句，可知答案为A。