.语法填空（本题共20分，每小题2分）
阅读下面短文，按照句子结构的语法性和上下连贯的要求，填入适当的词或使用括号中词语的正确形式填空。将答案填入答题卷中。
I’m  21 only daughter of my parents. So they are worried  22   everything I do. For example, 23 I ride my bike, my parents won’t let me 24  (ride) by myself. They are afraid I might fall off my bike and hurt  25 .They are taking great trouble to support the bike, with my mother even  26 (carry) a first-aid box. I’m not free to ride and I often say 27 (angry), “Why not let me ride alone?”
Now, most families have one child.    28  want to do everything for their children. This does no good to them. Too much love from parents may prevent children from ___29  independent. In my opinion, parents should let their children do  30 they should do alone.