columbus wanted to cross the ocean 这句话里的wanted为什么要用过去式

columbus wanted to cross the ocean 这句话里的wanted为什么要用过去式 请帮着解决几道六年级的英语题六、阅读理解.读短文,判断对错.Columbus was born in Italy (意大利) in 1451. He moved to Spain in 1477. Columbus always wanted to visit China. In 1492, Columbus sailed from Spain with 3 ships Teachers are () the young kidsA wanted for.B want for.C wanted to.D want to 了解美国历史哥伦布的.400字左右Michael Berliner,“The Christopher Columbus Controversy,” Los Angeles Times,December 30,1991.A.Why is Berliner hostile to those who are opposed to Columbus Day?B.Why should Columbus be celebrated?C.What a She wanted to r___. Jackson _______ to work in the government office though he hated serving there. A.wanted B.was wanting C.is wanted D.was wanted选?为什么 I _____to make my uncle stay.He still wanted to leave.填A,wanted B,decided C,failed D,told Tom said that he to play basketball A.wants B.has wanted C.wangted D.had wanted I ---- see you,but I didn't,for I had no time.I ---- see you,but I didn't,for I had no time.A.had wanted to B.has wanted to C.wanted D.was wanted 句子结构分析,求大神指点：It was 80 years before Christopher Columbus crossed the ...具体如下：It was 80 years before Christopher Columbus crossed the Atlantic ____ Zheng He had sailed to East Africa.A. when B. that C.after 根据句意及首字母填单词1.The teacher was a____ in the room when I arrived.2.All this year's new m____ are at the car show.3.Columbus d____ America.4.Many people are worried about the pollution（污染）of the e____.5.He wanted to keep it 初二英语根据句意填单词1.The teacher was a________ in the room when I arrived.2.Allthis year's new m________ are at the car show.3.Columbus d________ America.4.Many people are worried about the pollution of the e________5.He wanted to keep she wanted to go hiking _______ at homeA.staying B.stay C.to stay D.stayed He wanted to make her ( ) A cry B crying C to cry哪一个正确啊 She wanted to keep the conversation ____.a:going b:to go c:go they wanted some food ( ).A.to be eaten B.to eat C.eat D.eaten the pande wanted to see who planted ( )trees.A,do B,to do C,does Columbus was the first_the new ContinetA to have discovered B to discover C discovering D having discovered为什么不是A,哥伦布发现了新大陆不是对现在有影响的吗?