Let's be good frieds,---?

Let's be good frieds,---? let's be frieds?ok?什么意思 Let's ____ (be) good friends. let's be good friend 为什么用be let,s are good friend还是let,s be good friend Let's ______(be) good friend.这怎么做? Let's be good friend .指出错误单词 Let's be good friend.哪个单词错了? Let's___________(be) good friend let us be good friends. Let\'s be together 1.Let's( )good friends