MISSING MONDAY: CHOOSE THE CORRECT MODAL

Hi everyone! Happy Monday to you all. Hopefully you had a wonderful weekend!

For today's Missing Monday, we are looking at a sentence that has a modal verb missing. Do you know which one it is?

Sentence: She _____ be at work. I just called her work and she is not there. 

If you think you know the modal, let us know on our Facebook page. 

https://www.facebook.com/ZigguratEscuelaCorporativadeIdiomas/

Hint: the modal verb is in the negative form and could be two words or a one-word contraction.

Thanks for participating! Have a great day!