用must,have to,need完成句子
1.You ________ with us in London some time.(你最好来和我们在伦敦待一段时间）
2.We___________ patient.（我们都必须耐心.）
3.You ______ （现在不需要还书）.You can keep it till next week if you like.
4.It's still early,you_____ （不必匆忙）
5.If you really want yourself to be in good health,you_____ always ____ so much.（不能总是吸这么多烟）