题干

_______ almost all our time to our schoolwork in the past three months, we have almost no time for fun and play.
A.Having devoted B.Devoted
C.To devote D.To have been devoted
上一题 下一题 0.64难度 单项选择 更新时间:2013-03-24 10:41:34

答案(点此获取答案解析)