来自蔡颖的问题
写出下列词的复数：boyfamilypenfootradiowatchkeyboxtomatostudentchildwomanchineseknifesweatertoypartyphotoorangebus还有这些？
写出下列词的复数：boyfamilypenfootradiowatchkeyboxtomatostudentchildwomanchineseknife
sweatertoypartyphotoorangebus还有这些？
