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?