——— ——— ——-,you should____ the police_____help when you are in trouble当你遇到困难时,应该首先向警察求助

问题描述:

——— ——— ——-,you should____ the police_____help when you are in trouble
当你遇到困难时,应该首先向警察求助

First of all....call...for

At first time, you should ask the police for help when you are in trouble

当你遇到困难时,应该首先向警察求助.
(First of all),you should (call) the police (for) help when you are in trouble.
first of all,首先.
call sb for help,向某人求助.