---Many species are now in danger of dying out.----True.Measures should be______to protect them right now.
If a person has not had enough sleep, his actions will give him_____during the day.
It is often said that the joy of travelling is______in arriving at your destination _____in the journey itself.
Don’t be______by products promising to make you lose weight quickly.
You don’t have to know the name of the author to find a book. You______find the book by the title.
—Mom, Tom asked me to play football with him. Shall I go out now? —______. Be careful and don’t play in the street.