按要求改写句子。
1．These are my mother’s socks. （对画线部分提问）
______ ______ are these?
2．Whose dress is that? （改为复数句）
Whose ______ ______ ______?
3．This is a basketball too. （改为否定句）
This ______ a basketball ______.
4．They are three pairs of shorts. （改为单数句）
______ is a _______ of ______.
搜索
