I had better ___(do/to do)

I had better ___(do/to do) had better do=? 是had better to do还是had better do had better do还是had better to do had better +do sth 还是had better +to do sth had better(not) do sth... had better do等于什么 I do not do very ___ in Maths.I want to do better but do not know how. 是had better do sth还是have better do sth have better do sth.和had better do sth. if I ___（give） another 2 minutes I Will do it better think,you,that,better,do,had,your,I,homework.如何排成一句话 连词成句 think,you,that,better,do,had,your,I,homework 英语翻译提示had better not do sth 有had better not to do sth. He had better do some r______. had better do sth 等于什么句型 This cell phone is ___, if ___ the cell phone I had stolen last week.A. good...better B. as good...better than C. as good as...not better than D. better than...as good as