You have no choice - you'll just have to go by the book. If not, you'll be in a picle. (to be in a pickle = dostat se do nesnází, být v bryndě)
2. To rack one's brains - napínat mozek, lámat si hlavu
I racked my brains to remember where I'd last seen him.
3. To put something on the backburner - dát něco k ledu, na čas určitou záležitost odsunout
When she got married, her career was put on the backburner.
4. In any case - v každém případě, ať je tomu jakkoli, každopádně
In any case, we'll have to come to a compromise.
5. To drop somebody a line - krátce někomu napsat, napsat aspoň pár řádků
You know that Mark is too lazy to write, but I think he could drop a line to his mother at least form time to time.