请根据所给词的适当形式填空。
1. Tom wants to ____________ (buy) a postcard today.
2. Go straight for five ____________ (minute).
3. Usually he ____________ (walk) to school every day.
4. This is my book, that is ____________ (you).
5. Sarah ____________ (take) a trip next week.

Classify the words. （把下列代词分类）
I, you, my, he, she, him, them, mine, their, his, myself, your, yours, hers, it, yourself, our, themselves, ours, me
1. 形容词性物主代词：________________________________________
2. 名词性物主代词：__________________________________________
3. 人称代词主格：____________________________________________
4. 人称代词宾格：____________________________________________

The book is _______. (   )

A．my

B．i

C．mine

D．her

按要求完成单词。
【小题1】heavy（比较级）________
【小题2】shorter（反义词）________
【小题3】your（名词性物主代词）_________
【小题4】my（名词性物主代词_________
【小题5】kilogram (缩写形式) _________

It's ________ book. The book is ________. (  )

A．your; your

B．your; yours

C．yours; yours