5.A.Thank you all the same.
B.It doesn’t matter.
C.That’s a good idea.
C.That’s all right.
7.A.Neither my father nor my mother will go to the evening party.
B.Both my father and my mother will go to the evening party.
C.Either my father or my mother will go to the evening party.
8.A.The shop is big enough.
B.The shop is a new one,for it opened the day before yesterday.
C.The new shop opened only a week ago.
9.A.The two friends haven’t seen each other for months.
B.The two friends were so busy talking that they forgot everything else.
C.The two friends were very pleased to see each other again.
10.A.We learn knowledge at school.
B.If we learn more knowledge,we’ll have a happier life.
C.Knowledge is better than our lives.
11.A.In a post office. B.At a cinema.