tooth room book school哪一个与其它三个oo发音不同

foot,tooth复数都变oo为ee,那么book,room怎么不变? tooth room book school哪一个与其它三个oo发音不同 cook roof room tooth辨音 tooth tooth tooth book look tooth good中哪一个发音不同 cook tooth book look 中oo发音不同的是 the book( )the sitting room i want to book one room.为什么不用a room tooth咋读 TOOTH怎么样 tooth for tooth是什么意思 tooth belt tooth是什么意思 egg + plant= tooth+brush= foot+ball= sun+glasses= bed+room= class+room= class+mate= school+bag= poli写出下列组合词及其意思：egg + plant= tooth+brush= foot+ball= sun+glasses= bed+room= class+room= class+mate= school+bag= police+man= basket 1.book 2.cool 3.school4.room 发音不同