12. I don't know her reasons ____ our contest. A about B against C at D in

Question

12. I don't know her reasons ____ our contest.
A about B against C at D in
(16)Look! The tress____.
A are cut down
B are cutting down
C are being cutting down
D are being cut down
谢谢！我要详细的解释说明

Answer 1

B 我不知道她反对比赛的原因
D正在进行时的被动语态 be+being+动词被动

Answer 2

A D