题干

It’s very kind ______ Andy to help people in need.I think it’s necessary _____ us to learn from her.
A.of; ofB.of; forC.for; ofD.for; for
上一题 下一题 0.65难度 单选题 更新时间:2018-09-04 08:09:08

答案(点此获取答案解析)