表建议的句子、Let' go to the cinema,------?这个题选B为什么?A.will youB.sha

表建议的句子、
Let' go to the cinema,______?这个题选B为什么?A.will youB.shall weC.dont' youD.do we还有个同样的句型：Lucy didn't come to school yesterday,_____?A.did sheB.didn't sheC.does sheD.doesn't she这道题选A,又是为什么!