Question

In the following sentences, identify the correct form of the verb. Many Canadian citizens who live in Montreal speak/speaks French. She speak/speaks highly of the new president of the company. Grace usually sleep/sleeps longer than her sister. Newborn babies sleep/sleeps for 16 to 17 hours a day. Jorge suffer/suffers from chronic back pain. People with Alzheimer's disease suffer/suffers from memory loss.

Answer 1

This question has to do with the correct form of present simple tense for each person. Here, you should know that this form for every person looks the same, except for third person (he, she, it) where you have to add -s. 
Having this in mind, these are the correct answers:

1. Many Canadian citizens who live in Montreal speak French.
2. She speaks highly of the new president of the company.
3. Grace usually sleeps longer than her sister.
4. Newborn babies sleep for 16 to 17 hours a day.
5. Jorge suffers from chronic back pain.
6. People with Alzheimer's disease suffer from memory loss.