‘BIG SISTER' MEANS... A. THE ONLY CHILD B. THE BIGGEST SISTER C. TH...

7. - BAI KIEM TRA TIENG ANH 10 LAN 1
BAI KIEM TRA TIENG ANH 10 LAN 1

7. ‘Big Sister' means...

A. the only child B. the biggest sister C. the eldest sister D. the oldest person