1.The teacher, in front of ________ house lies a big lake, is very patient with his children.
2.Threads in an affectionate mother's hands are the clothes on a son ________ is going away.
3.No wonder young people are fascinated by the film, ________ the youth culture in big cities is wonderfully shown.
4.Whenever I read the old letters, ________ was fairly often, sweet memories warmed my heart.
5.With a loving character, Tom is such a kind and helpful person ________ we cannot praise too much.