题目内容：

语法填空,阅读下面材料，在空白处按要求填入适当的单词或括号内单词的的正确形式（每空一个单词）

My name is Sam. Welcome to   1.   classroom. I love it very much because it is very big____2.___  beautiful. There are twenty    _3.___ (desk) and chairs here. There is a big blackboard ___4.____ the wall, and I like to draw __5.____ (picture) on it. Can you see a pencil and ___6.____ pen on the desk? They   7.     （be）mine(我的). There is a 8.     (篮球) under the chair. I like   9.    (play) it with my friends after school. It’s my 10.   （最喜欢的）sport.