—Only one of these books is worth _______.—_______ is no wonder that you look so upset.
—I am wondering if we could go boating on the weekend. —It _____ a good idea.
After the new technique was introduced,the factory produced____ in 2001 as the year before.
—Wow, your house is so big! —Yes, it’s three times _____ yours.
I’ll probably see you on Sunday;____ , it will be on Monday.
Yesterday our head teacher made such an ____ speech that we all felt _____.