It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
A.which , that | B.that, where | C.whom, that | D.which, where |
相关知识点
推荐套卷
It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
A.which , that | B.that, where | C.whom, that | D.which, where |