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

Câu hỏi

Their contributions were _________to the homeless people.

A. meaningless

B. serious

C. meaningful

D. invalid

Đáp án
C. meaningful

Câu hỏi thuộc Bài tập:

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