（ ）Mary often______on Sundays
A.goes shopping B.go shopping C.go to shop D.goes to shopping
（ ）If you want to______,you can go to the library.
A.buy some food B.read books C.have dinner D.call your friends
（ ）If you try to sit on two chairs,you will fall______them.For life,
you must choose one chair.
A.beween B.under C.among D.into