The difficulty of the final exam should be increased
the final exam will be more difficult~
The difficulty of final exam should be increased
highly/extremely difficult/hardsomething of a high difficulty level绝对精确，请放心采用。
hard一般程度的难; difficult困难的; tough棘手的;insuperable难以克服的;insurmountable难以逾越的
formal writing would be "The difficulty of the final exam should increase"(正式)more casual would be "the final exam should be harder"（非正式）
158 浏览 7 回答
321 浏览 11 回答
312 浏览 4 回答
240 浏览 7 回答
166 浏览 4 回答
106 浏览 8 回答
265 浏览 3 回答
209 浏览 8 回答
195 浏览 2 回答
101 浏览 2 回答
114 浏览
286 浏览
239 浏览
249 浏览
115 浏览
假如天天做梦
