必须进行细致的市场研究。A careful study of the _______ is ________.
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上个月,秘书被经理解雇了。___________,the manager _______ the secretary.
把调查表发到每个人的手上。__________ should ________ to everyone.
应当取消这个计划。The ______ should be ______.
这位年轻人应该受到表扬。This young man _______ _________.