We"d better to call the police at once.这个句子哪错了?

Wed better to call the police at once.这个句子哪错了? ( )the manager ,you'd better call ( ) his company.( )the manager ,you'd better call ( ) his company.A.To call on ,atB.Calling ,onC.Calling on ,atD.To call at ,oncall on & call at 有什么区别? 是we'd better do 还是we'd better to do ? We'd better pay more attention to our study.翻译 We'd better use more time to study. We'd better walk to school.改为完整形式 We’d better hear what he has to say.We’d better hear what he has to say. We will leave very early for the airport tomorrow morning,so you had better ＿and arrange a taxi.A、call for B、call in C、call up D、call on We'd better hear what he has to say.这句中we'd是什么的缩写? We all think ____that subject A better to drop B it better to drop C it better dropping D better dropping这个搭配的用法是什么? We ( ) wait for him.A.had not better B.had better notC.had not better to D.had better not to To catch the rain,we'd better go to the station by taix.(同义句转换）To catch the train,we'd better ( ) a ( )to the station. we'd better _________ 什么? We'd better break up.. We shouldn't c() about our fate,but we'd better do something to change it. Don't you think _ a special committee to study the problem.A.us better to form B.it better we to form C.we better form D.it better for us to form答案是D,请问为什么呢? check一下这句子对不you'd better start stadying hardyou'd better call himi'd better go to sleep为什么用Go sleep?go to sleep 为什么不行呢? 口语中we'd better是否可以说成we better