题干

----Hurry! There’s no time to waste.
----OK. But I’m afraid that ______ I work around the clock, I can’t catch up with those straight A students.
A.even ifB.asC.untilD.as though
上一题 下一题 0.64难度 单项选择 更新时间:2016-03-29 04:46:28

答案(点此获取答案解析)