Mark thinks that it his duty to settle语法对吗

Mark thinks that it his duty to settle语法对吗 He thinks that Hemingway's stories are not as humorous as A Mark Twain's B that of Mark Twain为什么选A Is that Mark's___?b:Yes,it is该怎样填 几道英语选择,1.---- I have never had an accident while driving.---- ____ about that time you ran into a lamppost?A.How B.What请问为什么选A不选B?2.Just because he got a higher mark he really thinks he's ____.A.it B.that C.so D.such为什 22.Directions:Each of the following sentences has four underlined parts marked a,b,c and d.Identify the one that is not correct.Then,mark your answer by blackening the letter of your choice on the Answer Sheet.Everyone in our class thinks it is urgen He thinks that it will be difficult for a robot,为什么要用that it而不是that wife,it,my,that,thinks,an,could,animal,be(连词成句） He thinks that it necessary for a teacher to have the sense___________________humor. It's strange that she__(think)so.答案是think,为啥不是thinks? Mark came to China for the first time.=It was the first time that Mark _______been____China可不可以填had 和to she thinks it is really — Hello,I'd like to speak to Mark,please.— _____________________________.A.Yes,I'm Mark B.This is Mark speakingC.It's me here D.This is me选b还是d 应该是 that's me吧 He thinks it is important that he should know English well.(句意相同)He thinks___important ___know English well. My mother thinks necessary to clean the house every day.A.that B.this C.it D./ It ( )that there is no way out of difficulty.A.looks B.thinks C.believes D.seems If you are passionate about something, pursue it, no matter what anyone else thinks. That’s how什么意思 It was along the Mississippi River ()Mark Twain spent much of his childhood.应用where还是that He told me that Mike thinks that it is imposible.这句话中哪一个（that）可以省略?为什么?回答越详细越好.