Have you seen your nephew lately—Yes, in fact, I saw him yesterday. I _______ him for three years.

ing to the Ministry of Environmental Protection, many cities in China suffered ______ air pollution during the third quarter of this year.

________ the weather is very changeable these days, many people have caught a cold.

never ashamed of what she does,_________ she ends up doing something wrong.

The observer’s statement about the accident was very ; we know almost everything about it now.