问题详情：
根据句意及首字母或汉语提示完成单词
many colours are there in a_____(*虹)?
h c_____ do you like, red or white?
’t p______her anything if you don’t want to get into trouble.
’s difficult to make a ______（决定）to give up smoking.
will have less d_______ learning English with your teacher’s help.
【回答】
1. rainbow 2. colour 3. promise 4. decision 5. difficulty
知识点：单词拼写
题型：单词拼写
