问题补充：
, she is the sort of woman to spread sunshine to people through her smile.
A. Shy and cautious
B. Sensitive and thoughtful
C. Honest and confident
D. Lighthearted and optimistic
答案：
A. Shy and cautious
B. Sensitive and thoughtful
C. Honest and confident
(答案→)D. Lighthearted and optimistic
解析：句意为：,她是通过她的微笑向人们传递快乐的那种人。与此意相符的是lighthearted 快乐的和optimistic乐观的，故答案应为D. shy adj害羞的; cautious adj 谨慎的；sensitive adj 敏感的；thoughtful 体贴的，关心的；honest adj诚实的；confident adj 自信的。
