I often my old friends by email.

I have been living in the United States for 20 years, but seldom ________ so lonely as now.

The river smells terrible. People_______ dirty things into it .

Dad, can I have _________ to eat I’m hungry.- Sorry, there is _________ in the fridge. Can you go downstairs to buy some food

Do you know girl over there —Yes. She is exchange student from America.