根据所给汉语以及旬意，以正确的形式填写正确的单词。

1.I think this photo of people is taken less___________  (成功 ).

2. We've___________  (决定) that we will go to London for our next summer holidays.

3. I don't think we have worked out a___________ (策略) to deal with this situation.

4. I got in touch with him___________ (立刻) after I'd received the letter.

5.1 didn't follow the___________ (使用说明) of the new machine, and I broke it.