这种情况,用单数IS还是复数ARE?

这种情况,用单数IS还是复数ARE? A and B is/are... He and she have/has... 这种情况谓语动词用单数还是复数啊? sports 算复数还是单数 用is 还是 are Class One单数还是复数（用is 还是are) 这种情况,谓语动词应该用单数还是复数? each human being用单数还是复数(is/are)? deer后用is还是are,deer表示复数时用are,单数时用is ? glasses是单数还是复数!eg：Where is my glasses?是用is还是are? Some bags and a pig后面谓语用单数还是复数?用is还是are? 伦敦开幕式是单数还是复数,就是说用It is还是用They are There is还是are a series of accidents?就是谓语动词用单数还是复数 offspring 后接单数复数is还是are