Then he understood it was____ he had helped that little girl .这是在完形填空中,答案是because那我填that可不可以呢?语法上说得过去吗

语法挑错啊I was born on October 11,1987I and the younger brother two people My family lives in AnshanIs he older then you?I had not understood?I have not translated I have not translated 没错么？ ___many times,tom stilldid not know what i meant then ___many times,he finally understood itA.told B having been told 第一个选A第二个选B从then为句末词。后面是另一个句子 Only then ___ what his mother saidAdid he understand B he understood C does he understand Dhe understands Then he spoke slowly, but I could not understand himThen he said something and I understood it这同一篇文章的两句话.为什么第一句是understand , 第二句是understood整篇都是过去时,怎么第一句使用understand. I _____ the prolem until he explaind it.A.understood B.did not understand C.had not understood D.had understood 并列句The proter and l looked at each other .Then he said something l understood it.从属句 The proter and l looked at each other .Then he said something l understood it. i did not understood the problem until he had explained it.这句可以改成i had not understood the problem until he explained it.这样 为什么 He could make him understood I (realized)(understood)he was not telling me the truth 选择正确的词填空 once he explained a maths problem to me u____ i understood it 英语第45题The patient speaker ____ now and then to make sure that he was fully understood.A.took overB.went overC.came throughD.broke off I wanna make him understood这里understood为什么不用原形 英语翻译There was no affinity towards democracy as it was understood then well…to me this just sounds like historical revisionism.I think he is basing his arguments on the factual transcripts of the early.Founding fathers realizing that they di I did not understand the problem.He explained it.请用until把两句连在一起可是书上的原句是这样的：I had not understood the problem until he explained it.为什么是had not understood 呢 I have made myself understood by all the student.把understood换成to understood i had not understood the problem until he explained it.我再理解,过去完成式不应该是 had exlained 英语翻译HE IS RELI GUD then i don't care Then he understood it was____ he had helped that little girl .这是在完形填空中,答案是because那我填that可不可以呢?语法上说得过去吗