the question is (where) we shall perform the experiment 为什么是

the question is (where) we shall perform the experiment 为什么是 ":we decide the question by experiment" This is ___the question lies.为什么用where不用that.the question li we shall go where wroking conditions are diiffcult 为什么不用 the where shall we put the tick?怎么翻译这句话? 主动句变被动句：We shall discuss the question at the next meeting. The girl is a good (perform ) i think eliza is the best perform It is still a question when we shall have our sports meet为什么 The experiment was______easier than we had expected. The house where we live in is not very large.为什么要把where 改为wh We shall not forget the time when the meeting will open.为什么是