题干
—Did you see Tom at the party?
—No, he by the time I got there.
A：left
B：was leaving
C：had left
D：has left
答案(点此获取答案解析）
C
—Did you see Tom at the party?
—No, he by the time I got there.
A：left
B：was leaving
C：had left
D：has left
