Up to now Down’s syndrome ________. A. have not been cured B. have not to be cured C. have not cured D. have not been curing

Up to now Down’s syndrome ________.

A. have not been cured              
B. have not to be cured
C. have not cured
D. have not been curing

Trả lời

Chọn đáp án A

Câu hỏi cùng chủ đề

Xem tất cả