Each of us was very happy the end of the day.A. at B. on C, with D. for
--- 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.