Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

Câu hỏi

The most_________ reason why people volunteer is to improve their skills.

A. obvious

B. hopeless

C. doubtful

D. uncertain

Đáp án
A. obvious

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 4: For a Better Community - Vocabulary