问题

We ______ here at lunch time; we were delayed at the airport, though.[ ]

A: could be
B: would stay
C: must have been
D: would have been

正确答案是：

同类题型

There ___________ a football game next Sunday.

How long do you think _______ the conflict betweenJapan and China comes to an end

Cigarette smoking is a major factor____to cancer.[ ]

It’s important ______us to learn English well.

The old man needs our help, ______