—Whose book is this ?—Let me see. It ________ be Cindy’s. You can see her name on it .
Many cities in China, _______Beijing, have been deeply affected by dirtier air.
It was raining _______when my sister and I got to the museum.
People usually like the TV channels with funnier programmes but ________advertisements.
- _______does Nancy help the old lady with her housework?- About twice a week.
________good time we have had in the junior middle school!