children的单数形式是  。 (    )

A．child

B．childre

C．childr

用所给单词的正确形式填空。
【小题1】The baby _______ (cry) now.
【小题2】I would like _______ (orange) .
【小题3】The man behind _______ (I) is talking.
【小题4】The _______ (boy) and _______ (girl) are singing and dancing.
【小题5】The people on the train are _______ (have) fun.
【小题6】He is _______ (eat) an apple.
【小题7】We often _______ (have) breakfast at 7 in the morning.
【小题8】They _______ (be not) doing their homework.

Fill the blanks. with words.（根据首字母填空）
- W____ is this？
-It is a d____.
-I like m___ dog.

按要求写出下列单词的正确形式。
1. party ( 复数形式 )____________
2. first ( 基数词 )____________
3. are ( 单数 ) ____________
4. mum ( 对应词 ) ____________
5. wolf ( 复数形式 ) ____________

--Do you like____?  （   ）
--No, I don't.

A．pear

B．pears