A.The boy' s parents.
B.The boy' s summer holiday.
C.The boy' s study.
D.An illness.
A.They are very good parents.
B.They quarrel a lot.
C.They have only one child.
D.They love each other very much.
A.He will spend it in England.
B.He will study history.
C.He is going to live in the country.
D.He is going to learn French.