问题描述：
tom is a s_____ student in 12th grade （首字母填空）
I live on the 20th floor.I use a l(是小写的L)______ to go up and down every day.
I live on the 20th floor.I use a l(是小写的L)______ to go up and down every day.
问题解答：
我来补答展开全文阅读