题目内容：

根据下列句子及所给首字母，写出单词的适当形式，每空一词。

1.We have three m________ a day. They are breakfast, lunch and supper.

2.They took quite a f_______ photos in Guizhou.

3.I d_______ playing computer games. I think they are boring.

4.I exercise t________ a week, every Wednesday and Friday.

5.It is sunny today, so it is not n_________ for you to take an umbrella.