If you can’t understand these sentences, your constant lack of handing in homework ____.

He can________$ 3,000 a year by writing stories to support a family of three people.

She _____ as the first lady of Republic of Korea instead of her mother for five years when her father ruled the country.

Mr. Smith ______ a grammar book meant for senior high school students and will almost finish it.

If we ________ now to protect our mother river ---Li Jiang River , we ‘ll live to regret it.