24. —How many chapters does the book have? —It ____ three chapters.
In fact, more and more people ____ to live a greener, healthier and more environmentally “green life”.
——Did you know any French before you arrived in Washington? ——Never ____ it, actually.
____ the search engine just gave me some brief introductions rather than the whole content of the book to read.
The program is like a window on the world ____ you sit by it and fix your attention on what it shows.
——Ms Lin looks rather a kind lady. ——But in fact she is cold and hard on us. You ____ believe it!