Ordering Modal Auxiliary

May means

• Someone has permission to do an action

• The action probably ought to happen

• The action absolutely needs to happen

• Someone has the ability to do an action.

Can means

• Someone has permission to do an action

• The action probably ought to happen

• The action absolutely needs to happen

• Someone has the ability to do an action

Must means

• Someone has permission to do an action

• The action probably out to happen

• The action absolutely needs to happen

• Someone has the ability to do an action

Shall means

• a FORMAL version of will that indicates a future action

• The action that might happen

• The action absolutely needs to happen

• Someone has the ability to do an action.

Which helping verb BEST completes the sentence below? 
If you like, you _______ have a piece of cake now. 

• might
• may
• will
• must 

Which helping verb BEST completes the sentence below?
If you want to go on the field trip, you _______ bring in your money by November 9th. 

• can
• must
• could
• may 

Which helping verb BEST completes the sentence below?
______ you hear the music playing in the other room? 

• may 
• must
• can
• might 

Which helping verb BEST completes the sentence below?
We ________ have gone to the pool this afternoon if the weather had been nice. 

• might
• can
• must 

Which helping verb BEST completes the sentence below?
Jefferson wasn't sure if he ________ lift the big rock because it was so heavy. 

• may 
• must
• could 

Which helping verb BEST completes the sentence below? 
You _______ be at least 18 years old to vote. 

• can
• might
• may
• must