－Oh, it is you. I ________ you.

－I’ve just had my hair cut, and I’m wearing dark glasses.

[　　]

A．didn’t recognize

B．hadn’t recognized

C．haven’t recognized

D．don’t recognize

－Do you prefer ________ rather than join in the journey?

－Yes. I prefer ________ to leaving for the journey.

[　　]

He just arrived, but I didn't know he ________ until yesterday.

[　　]

－You haven’t been to Beijing, haven’t you?

－ ________. How I wish to go there!

[　　]

This maths problem is hard ________ .

[　　]

－You are drinking too much.

－Only at home. No one ________ me but you.

[　　]

He hasn't come yet. What do you consider 　　　　　　   to him?

[　　]

We were all surprised when he made it clear that he ________ office soon.

[　　]

－He promised to come to see you.

－But he ________. I have been alone.

[　　]

________ is the distance between the two cities?

[　　]