Anna waved to us as a_________ that he saw us. signal

Câu hỏi :

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Anna waved to us as a_________ that he saw us.

A. signal

B. scene

C. signature

D. scenery

* Đáp án

A

* Hướng dẫn giải

Đáp án A

signal : dấu hiệu.

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