怎么开汽贸公司:一些英语交际用语题,some explanation ,please>

(您能说几个就说几个，不求您多，但求清晰详实。谢谢您的HELP)
1.--i'd rather like to play footballwith some friends.what do you think of that? A.ok,let's have a change
--___B___. B.I'm sorry you feel that way.
C.I don't know you hate it
D.I think you'll like it (务必都解释一下)

2。--may you have a bright future!
--___C___.
A.thank you I may B.I will have a try
C.well,I won't disappoint you
3.--never thought to meet you here at this time!
--______.
A.So did I B.It's a small world.
4.--You have no difficulty finding the answer to the question?
--________.
A.None at all B.Not at all C.No problem
5.Tom is always ___B___ student.
A.a slow B.an eager C.a hopeful D.a patient
6.Many elderly people are not used to the __C__of modern living,which they consider as a way from the old custom.
A.tendency B.tend C.trend
5题其他答案也没有错啊?!