ought to need can have to must may
1.The last bus has gone.We take a taxi.
答案have to
2.The bookshop is just around the corner and you miss it.
答案can’t
3.You pay more attention to your pronunciation.
答案must/ought to
4.How you possibly miss the news?It has been on TV all day long.
答案can
5.Life is unpredictable;even the poorest become the richest.
答案may/might
6.You finish your homework now—there is still two days left.
答案needn’t/don’t have to
