—I am sorry I _______ my exercise book at home.— Don’t forget _______ it to school tomorrow.

The aged lady smiles so sweetly that she _________ me of my beloved grandmother. 

---What do you want to be when you _______? -----An astronaut.

—You were out when I dropped by your house. — Oh, I_________ in Zhongbai Supermarket with my parents.

—Maria is wanted on the telephone. Where is she?  —She _________ the library. You can find her there。