If I ________ out of my ink, I would have finished writing the paper.

[　　]

Why didn't you tell him the truth? If I________ you, I would have.

[　　]

----Did you catch the plane?

----No, if I had hurried, I________.

[　　]

----You can ask your brother for help.

----He is not at home. If he ________, I ________.

[　　]

If I________ ten years younger, I________ very happy.

[　　]

There were nearly I00 experts present at the meeting, _______ about 60 were from foreign countries.

[　　]

He can earn as ________ as 4000 yuan a month.

[　　]

He believed ________ for them to solve the problem in such a short time.

[　　]

Do you agree to his ________ that all the trees on both sides of the road be cut for a good price.

[　　]

They have no idea at all ________.

[　　]

A．where he has gone

B．where did he go

C．which place has he gone

D．where has he gone