-Jim, how about keeping a dog as a pet?-Good idea! but I prefer to have a cat. The dog is _____ to look after.
--- Would you like me to help you? --- .
--- Where’s Bob? --- He_____ to the library.
--- Mary doesn’t remember when and where she this skirt.
- --What's your brother? - --He's a teacher. He art at a school。
--Itwasabeautiful, cloudless sunnydayattheendsummer.