英语问题,我想知道答案及其理由.

英语问题,我想知道答案及其理由.1.The secretary worked late into the night, _____ a speech for the president.A.to prepare B. preparing C.prepared D.was preparing2.The old man lived in a small house _____ windows faced south.A. that B. which C. what D.whose 3.Our team ____theirs in the football match.A. beat B. defeat C.won D.gained4.Have you been to the place _____ we visited last year?A.where B.which C. in which D. to which 5.Is Tom disappointed? I think so. He _____ to pass the examination, but he _____ in it.A. was hoping,would fail B. had hoped, would fail C. has hoped, would fail D. had hoped, failed6. I remember _____ this used to be a quiet village.A. when B how C where D what