WERE THE WRIGHT BROTHERS THE ONES BUILT THE FIRST AEROPLANE

21. - BÀI SOẠN TRAC NGHIEM TA 9 UNIT 8
BÀI SOẠN TRAC NGHIEM TA 9 UNIT 8

21. Were the Wright brothers the ones built the first aeroplane?

A. which B. whom C. whose D. that