It ( )Mike and Mary who helped the old man several days ago. A.was B.were C.are D.had been答案是A,说是指代整件事.能解释一下,再举个选B的例子么

mary and mike._________ mother is a worker.A.Mary and Mike’s B.Mary’s and Mike’s C.Mary’s and Mike D.Mary and Mike microsoft mike and mary tts voices 是什么 Mike and Mary are both nine years old.同义句：Mike ____ ____ ____ Mary. Mike is b______ Mary and Tom. 填什么 如何使用Microsoft mike and Mary TTS voice _________ mother is a worker. A. Mary and Mike's B. Mary's and Mike's C. Mary's and Mike D. Mary and Mike 选哪个啊 求解释 初二完型填空 要详细说出选什么 为什么Mike is very　1　at maths.Mary,his sister,is not good at it.Mike often helps her　2　her maths.One night Mike and Mary　3　out their exercise—books and began　4　their lessons.Soon Mike f 【选择】50.it （ ）Mike and Mary who helped the old man seveal day ago.（ were / was / are / had been）这题选什么,理由是. Tom,Mike,and Mary were classmates of Stephen's 's怎么理解呢 Hi, Mike, Mary wants to _______ with you and she is waiting at her office. （）is Mary and ( ) Mike.Nice to meet you.括号里面填什么 My friend Mike is between Mary and ____(I)填I还是me mary,Sits,mike,and,LiIy ,A,behind,B,aI0ng,C,betWeen,D,aCr0Ss It ( )Mike and Mary who helped the old man several days ago. A.was B.were C.are D.had been答案是A,说是指代整件事.能解释一下,再举个选B的例子么 Ilike mike s bike and it is white not black 首字母填空:They're n( )the river.全文是这样的：It is Saturday.Mike and Mary don not go to school.Now they are near the river.They are f（）a model plane there.The plane is falling i（）the river.Mike w（）to get it out，but he is f there (有）Mary and Tom in it microsoft mike and mary tts voices 是什么程序?我就安装了个OFFICE 2003 怎么有这个了啊