She had to go to that school on a bike.为什么是had而不是has

She had to go to that school on a bike.为什么是had而不是has She was quite tired after a long walk.____ she had to do some washing.A、and B、yet C、so D、so tha为什么答案选yet? the poor girl could go to school,she had to t______herself at home. she did not go to QingDao because she had been therr before.翻译 she had to send for fresh supply of paper,or she could't go on with she had to go shopping yesterday为什么要用动词原形to go而不能用went? She had to go there （twice a week ）last year（画线部分提问） 歌词why she had to go I do not know是什么歌 “The children had better go to bed early.”she sad.改为间接引语 “The children had better go to bed early,”she said直接引语变为间接引语 106614:she said they still had a long way to go to make hotels in our city much safer.想知道的语言点：1—had a long way to go to make hotels：这里的go to Perhaps she had to go home early.这个had 后加了动词原形,到底是什么时态.. She wants to go to the pictures. She is going to go to Japan Jenna,a popular girl from Westwood Middle School,had graduated first in her class and was ready fArriving home she started with math.She had always been a good math student but now she was 22.She moved on to English and history and was 23 to find tha He had to go to work,( ) ,and tried to concentrate. Nobody had to go into the she had to go to that school on a bike.这里为什么用had而不是have``我怎么看不出来是过去时`