讀一讀，按要求完成任務(wù)．
（一）找規(guī)律，寫(xiě)出合適的單詞．

my	mine mine
his his	his
your	yours yours
her her	hers
clean	cleaned cleaned
watch watch	watched
read	read read
sleep sleep	slept
one	first first
two two	second
four	fourth fourth
six six	sixth
cook	cooks cooks
go go	goes
study	studies studies
make make	makes

（二）參考以上內(nèi)容，用所給單詞的適當(dāng)形式將句子補(bǔ)充完整．
（1）Excuse me ，is this book

yours

yours

（your）？Yes，it is

mine

mine

（ my）．Thank you．
（2）I

cleaned

cleaned

（clean） my room and

read

read

（read） some books yesterday．
（3）Where is the teacher's office？It is on the

first

first

（one） floor．
（4）Bill often

goes

goes

（ go） to school on foot．