Complete the sentences with must/mustn't or should/shouldn't 1.She........buy that hat. It looks great! 2. You .............wear sandals today. It's quite cold 3.We........... arrive on time fot the test at school. 4.You........drink lots of water. It's a good way to stay healthy 5.You...........swim if the red flag is flying. It's dangerous. 6. Mary............ stay up so late at night 7.We............... remember to take our tent and a torch when we go camping