Task 4. Complete the sentences with the correct modal verb: must, mustn't, can, can't, have to, don't have to. 1. You ________ eat too much candy before dinner. 2. Students ________ wear school uniforms at this school. 3. We ________ be at the airport at least two hours before our flight. 4. They ________ invite friends over for a party every weekend. 5. I ________ go to the party if I finish my homework on time.