_____________[A] sure [B] sick [C] aware [D] tired

– Are you sure about this？ －－ _______________.A、Absolutely.B、About what？C、Nice talking w

– Would you open the door for me？ －－ _____________.A、I’m fine.B、It doesn’t matter.C、Sure

He cannot be tired _______ he has walked only half a mile. A：since B：whether C：when

Steve: Would you like to listen to some music？ Tracy: ______A．Are you sure？B．Really？C．As I

_________(57)A.aware B.knowing C.pleased D.deligh

A:__________? B: Sure its just around the corner.