听一段材料，回答下面几个小题。
Who are the two speakers?
A.A man and his wife.
B.A man and his sister.
C.A man and his girlfriend.
Why is the man unhappy about their weekends?
A.They seldom invite friends over.
B.They seldom go out for a picnic.
C.They seldom spend weekends together.
Which aspect of the picnic do the man and woman differ on?
A.Who should get the car ready.
B.How many friends they should invite.
C.What food and drink they should prepare.