几道英语关于定语从句选择题
①This is the house ______ I live.
A.which B.in where C.with which D.in which
②Do you know Mrs Jackson _______ daughter is a famous poet?
A.that her B.whose C.who D.of whom
③The engineer _____ my father works is about fifty years old.
A.to who B.on that C.for which D.with whom
④All ______ is needed is a long time.
A.thing B.that C.which D.what
我感激万分啊,我真的很着急,而且也很需要,给答案的同时最好帮我解释一下子,我想知道是怎么回事,