请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。

　　Mrs．Thompson had watched Teddy the year before and noticed that he didn't play well with the other children, that his clothes were torn and that very often he 　　1　　 a bath．

　　In his file(档案), his first-grade teacher wrote, “Teddy is a bright child with a 　　2　　 smile．He does his work neatly and he is a 　　3　　 to be around．”

　　His second grade teacher wrote, “Teddy is a well-liked boy 　　4　　 he is troubled by his mother's illness and life at home must be a 　　5　　．”

　　His third-grade teacher wrote, “Teddy continues to work hard but his mother's death has been 　　6　　 on him．”

　　Teddy's fourth-grade teacher wrote, “Teddy doesn't show much interest in school．He doesn't have many friends and he sometimes sleeps in class．He could become a 　　7　　．”

　　On Christmas, Mrs．Thompson received presents from her class, 　　8　　 in beautiful ribbons and bright paper 　　9　　 Teddy's, which was in a brown shopping bag．

　　Mrs．Thompson opened the parcel in which was an old necklace 　　10　　 some of the stones 　　11　　 , and a bottle that was one-quarter full of perfume(香水)．She stopped the children's laughter, put the necklace on and dabbed some of the perfume behind her ears．

　　Teddy stayed behind just long enough to say, “Mrs．Thompson, today you smell just like my mom 　　12　　．”

　　On that 　　13　　 day, Jean Thompson began to pay particular attention to Teddy．As she worked with him, his mind seemed to become 　　14　　．The more she encouraged him, the faster he responded．By the end of the year he had become one of the smartest children in the class．

　　Every Christmas after Teddy graduated, she would receive a letter from Teddy．Then one day his letter was 　　15　　：Theodore F．Stoddard, PhD(博士)．

　　Another letter came on a beautiful spring day．Teddy said he'd met his girl and was to be 　　16　　．He was wondering if Mrs．Thompson might agree to sit in the seat for his mother．She 　　17　　on the wedding wearing the necklace Teddy gave her many years ago and using the perfume smelling just like the 　　18　　 Teddy remembered his mother smelling．

　　You can never 　　19　　 what type of effect you may make on another's life by your actions or 　　20　　 of actions．

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