题目内容：

There is a bookshop ____ River Road
A in B to C on D across

优质解答

IN介词 prep.在…里；在…中 副词 adv.向内；进入 · He just looked in for a moment.他只是（在门外）往里头看了看.· Come in.进来.· Step in,please.请进来.副词 adv.在内；在家；在办公室 AT介词 prep.（表示...