difficult的比较级为 difficulter。

I must admit that the situation is ____ than I thought it would be. A: most difficult B: more difficult C: difficult D: difficulter

The mountain climbers decided to challenge themselves with a （ ） route. 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181} A: difficulter B: more difficult