Mary is very sad now. Would you please go and _________?
I ______ Mary. This ______ Tom.
--- Is this ______ apple? ---- No, it’s ______ orange.
---Could you please help me to take these books there? ---_____.
_____ he is busy, ______ he helps his parents with the housework on weekends.
I exercise every day, so I am _____ healthy.