写出下列单词的复数形式。(20分)
⑴duck________ ⑵chick________ ⑶teacher________
⑷child________ ⑸gosling________ ⑹box________
⑺mouse________ ⑻shelf________ ⑼cow________
⑽foot________
写出下列单词的复数形式。(20分)
⑴duck________ ⑵chick________ ⑶teacher________
⑷child________ ⑸gosling________ ⑹box________
⑺mouse________ ⑻shelf________ ⑼cow________
⑽foot________