根据句意、汉语或首字母提示，补全单词，完成句子。

1. I can't imagine what the life of the animals will be like when they are living in the cages.

2. I sent them flowers as an_____(表达)of thanks.

3. Ten more houses will have been b_____ by next year.

4. She p_____his sleeves to get his attention.

5. There are countless _____(行星)moving around the sun in the space.

广告文案（）的写作一定要抓住广告创意和主题的重点，用简洁明确的语言和文字表述中心思想，切忌拖沓复杂。

A.文字

B.随文

C.标题

D.正文