If you are in the zoo remember not to touch or go near the animals. Although some of the

问题补充：

If you are in the zoo, remember not to touch or go near the animals. Although some of the animals are cute, you leave them alone.

A. must

B. will

C. may

D. can

答案：

(答案→)A. must

B. will

C. may

D. can

解析：情态动词的意义。前文的remember not to 提示，下文空格处用情态动词must 表示“必须”。