rewrite the sentences using must.mustnt.should.shouldnt.have to or dont have to
1)its not a good idea to swim immediately after a meal
2)its really important to take this medicine three times a day
3)is it necessary for me to do the exercise?
4)its satudray tomorrow,so its not necessary for me to get up early
5)its a good idea to listen to the weather forecast before you go hill walking
6)i can recommend this book to you-I think you would like it a lot
7)its a good idea to have a medical check-up every two years
8)its very important not to drink the water there.It will make you ill
9)is it really necessary for us to finish the work today?