问用be good at sth造两个句子

1.You need manual dexterity to be good at video games.玩好电子游戏手要灵巧。

2.Viruses tend to be good at surviving when a computer system crashes.计算机病毒在系统崩溃后往往依然存在。

3. You have to be good at spotting trouble on the way and heading it off.你必须善于发现潜在的麻烦并加以化解。