A red flag was placed there as a token of danger.

2023-11-03 10:58:26
卫生(A)

A red flag was placed there as a token of danger.

A.sign

B.substitute

C.proof

D.target

正确答案是A

上一篇：You should not <u>criticize</u> him so harshly in his face.

下一篇：Her treatment of the subject is <u>exhaustive</u>.