选择正确的答案填空,补全对话。
1．—__________ your name?  — Liu Xin.
2．—__________ pencils? —Five.
3．—__________ are you?—I'm fine, thanks.
4．—__________ is your ruler?—Blue.
5．—__________ this?—It's a book.
6．—__________ is it?—It's red.
A．How    B．What's    C．What colour    D．How many
A．How    B．What's    C．What colour    D．How many