题干

—Hi, Susan, where were you at lunch time?I ________ a seat for you in the coffee shop.
—Oh, sorry to miss you.My political science class ran longer than usual.
A.am savingB.was saving
C.had savedD.have saved
上一题 下一题 0.64难度 单项选择 更新时间:2014-03-28 03:48:28

答案(点此获取答案解析)