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.