高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
Tom ＿＿＿ into the house when no one ＿＿＿＿＿.
A.slipped ; had looked
B.slipped ; was looking
C.had slipped ; looked
D.was slipping ; looked
Tom ＿＿＿ into the house when no one ＿＿＿＿＿.
A.slipped ; had looked
B.slipped ; was looking
C.had slipped ; looked
D.was slipping ; looked
参考答案：
佳题速递：