假如你叫李华，你和笔友Jane互寄了全家的合影。Jane看了合影后来信问为什么你没有兄弟姐妹。请用英语写封100字左右的信说明情况。内容包括以下要点：
| 原因 |
1．中国人口增长过快； 2．二十世纪八十年代开始实行计划生育； 3．大部分中国家庭是独生子女。 |
| 看法 |
1．能受到好的教育； 2．父母关爱更多； 3．孤独、自私，生活能力差； 4．建议多交朋友。 |
What the doctors really doubt is my mother will recover from the serious disease soon．
| A．when | B．how | C．whether | D．why |
It is generally considered unwise to give a child _____he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
______leaves the room last ought to turn off the lights.
| A．Anyone | B．The person | C．Whoever | D．Who |
Sarah hopes to become a friend of ______shares her interests.
| A．anyone | B．whomever | C．whoever | D．no matter who |
---- I drove to Zhuhai for the air show last week.
---- Is that ______ you had a few days off ?
| A．why | B．what | C．when | D．where |