At the foot of the mountain ______.

[　　]

Don't jump ______ a conclusion before you make sure.

[　　]

I left him, ______ never to set foot in that house again.

[　　]

The war and suffering ______ caused affected him greatly.

[　　]

The girl ______ everybody had thought could win a gold medal failed at last.

[　　]

The managers discussed the plan that they would like to see ______ the next year.

[　　]

Mrs Black took the police back to ______ place ______ she witnessed the robbery.

[　　]

I have never dined with you, sir, and I see no reason ______.

[　　]

A．how can I know

B．how I ought to know

C．why shall I know

D．why I would know

Only those ______ knows well could be let in.

[　　]

Do you think the reason ______ he gave is believable?

[　　]