阅读对话，判断正误，正确的写"T"，错误的写"F"。

Jenny, Li Ming and Danny want to send postcards to their friends. They come to the post office.

Clerk: Where are you sending your postcard?

Li Ming: I'm sending it to Sichuan. How much is the stamp, please?

Clerk: One yuan.

Jenny: I'm sending these postcards to Canada. How much are the stamps, please?

Clerk: One stamp is ten yuan.

Jenny: I'll take two, please. Danny!  What are you doing?

Danny: I'm writing nine postcards to my mother.

( ) 1. Danny needs one stamp.

(     ) 2. A stamp is one yuan to Sichuan.

(     ) 3. Two stamps are ten yuan to Canada.

( ) 4. Li Ming needs nine stamps.

( ) 5. Jenny needs two stamps,

( ) 6. They need one hundred and one yuan.