Хелп Modal verbs 4. 1. The control work was very difficult buteverybody A can do it B has to do it C could do it 4.2. I'm so tired I for a week. A can sleep B could sleep C could have slept 4.3. She fallen and injured her leg. Amight have B can C could D may 4.4. When the lecture to begin? A is B must C shall 4. 5. "T'velostmykeys." "You them somewhere. A must drop B must have dropped C must be dropping D must have been dropping 4. 6. John wasn't at the meeting because heout it. A might not know B may not know C may not have known 4. 7. Why leave early? A had you to B did you have to C must you D you had to