题目内容
10、They ______ the train to Beijing．Otherwise, they would have returned home．
A．need have caught B．must have caught
C．must catch D．may catch
试题答案
10、B
相关题目
题目内容
10、They ______ the train to Beijing．Otherwise, they would have returned home．
A．need have caught B．must have caught
C．must catch D．may catch
试题答案
10、B