To his ________, his son failed to pass the exam again.

[　　]

Your teeth are not in good condition. Why ________ your milk without sugar?

[　　]

________ you have any difficulty with English, don't forget to turn to me for help.

[　　]

－I ________ she ________ out alone at night.

－I'm afraid not. She is a brave girl.

[　　]

A．dare say; dares not go

B．dare to say; dare not go

C．dared say; doesn't dare to go

D．dare say; dare not go

－Will you go home tomorrow evening?

－No, I am going to a lecture, or at least I'm planning ________.

[　　]

I wish that we ________ in a world where there ________ less pollution and smaller population.

[　　]

________ the wall, there are two windows ________ which hangs a picture.

[　　]

The delegation (代表团) that ________ a friendly visit ________ Beijing received a warm welcome.

[　　]

________ we can't understand is ________ he didn't join us in our discussion.

[　　]

Only after ________ made hundreds of experiments ________ succeed in solving the problem.

[　　]