---__________ will the match start?

---__________half past seven.

A．How long; until

B． How long; Not until

C．How soon; until

D．How soon; Not until

— Do you think it's a good idea to make friends with your students?

— _____ , I do. I think it's a great idea．[ ]

A. Really      

B. Obviously

C. Actually      

D. Generally