—Is there a football field? — Yes, _______! It’s the football field.
_____ more about the city, you can buy this book to read.
If you don’t go for a picnic tomorrow, _____.
Again and again the doctor _____ the crying girl, but he couldn’t find out what was wrong with her.
–Many boy students think math is _____ English.--I agree. I’m weak in English.
–Would you like to watch the three-D film Titanic with me?--Certainly. I don’t mind seeing it again although I _____ it twice.