Final answer:
Modal verbs are used to express different functions in sentences. Here are some clear and coherent sentences using the given modal verbs and their functions.
Step-by-step explanation:
Modal verbs are used to express different functions in sentences. Here are some clear and coherent sentences using the given modal verbs and their functions:
- Shall: Shall I follow this regulation?
 - Must: I must complete this task by tomorrow.
 - Can: She can speak three languages fluently.
 - May: It may rain tomorrow.
 - Should: You should study for the exam.
 
These sentences demonstrate the use of each modal verb to convey its specific function.