英语翻译1约翰在专心做练习,与此同时杰克却在看小说（concentrate on,meanwhile)2那个记者冒着生命

1. John is concentrating on his exercises, meanwhile Jack is reading a novel.
2. That journalist risked his life to cover situations in Iraq.
3. If you are eager to manage a restaurant, you have to know the tricks of the trade in this line of business.
4. Please thoroughly verify the list to avoid any errors, otherwise client might demand damages.
5. In that case, he was accused of having deliberately lost the game.

1John is concentrate on the practice carefully,meanwhile Jack is reading the novel
2 That journalist is risk in reporting the cover of Iraq
3 If you are eager to manage a restaurant ,you must...