1. Mai can't go to the movies with is tonight. She will have to look after her little sister.
2. If we go on wasting water there will be a shortage of fresh water in a few decades.
3." Turn on the TV, will you? - I want to watch the weather forecast.
4. I think I've lost my new pen I've looked for it everywhere.
5. Mrs. Yen forgot to turn off the faucets when she left home for work.
6. I am looking forward to hearing from you.
7. Never put off till tomorrow what you can do today.