Grades are really important, but they’re not ______ to us students.
--- 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 sunnydayattheend summer.
--- What did you do in your class meeting yesterday?--- We talked about ____________.