书上的是he's having a bath .为什么不是这样he's bathing

书上的是he's having a bath .为什么不是这样he's bathing The man we followed suddenly stopped and looked as if ( )whether he was going in the right directio这句话是如何划分成分的.为什么选A,不选BA.to seeB.seeingC.to have seenD.having seen 上一节音乐课的英文是have a Music lesson还是having a Music lesson?英语书上是They are having 下列元素符号都表示金属元素的是A.C、Cu、Ca B.S、Fe、P C.K、Mg、Ba D.H、Na、He He's having a bath 请问have已经是动车了,is可以直接去掉吗（he having a bath)为什么? He is a new student能缩写成He‘s a new student.我看书上都不是缩写的? Where is Mr.Read?He is in a r_.He's having dinner with his friends. 有关将来时的英语题It ［ ］my brother's birthday tomorrow.He [ ]a party. A 选项是is going to be;will have B选项是 will be；is having C选项是will be;is goi He is having a good 1.what the doing?2.they are a race on the playground.3.race are they having?4.a race.5.does tom run than liu tao 6.no,he .7.he runs than the other boys 8.what's with him 9.he's he didn't have this morning?请问 中的?是填什么单词的?[这段 The police finally caught up with the man __the escaped prisoner.填who 还是whom?书上的答案是BA.whom they thought wasB.who they thought was they thought he was a prisoner...he是宾语麼?我还是不懂..they thought the man was a prisoner.. It's a cake.书上看的! He's f___ in having a good job,since business is bad nowadays. 他正在上课吗是Is he having classes?还是Is he have a class?为什么打错了，第二个是Is he having a class 关于双重所有格能不能说he is used to the lifestyle of a flying doctor's书上是没有加’s的 那么这里加上去是不是也可以? 高等代数 令S是一些n 阶方阵组成的集合,关于任意A,B∈S,AB∈S,且（AB)的3次方=BA .证明：对任意A,B∈S AB=BA he bought the same car as my father 还是my father's可是书上写的是my father 线性代数书上的定义AB=BA=E.则AB互为逆矩阵.如果只写AB=E（或者BA=E） 能不能得出A是B的逆矩阵的结论?