There are some common writing/speaking models for English test in China. Do you think it is a good idea to using these expressions? As we all know, ... We can`t emphasize the importance of...(something) too much. There is no doubt that... I bet no one could deny that... There is...(something) that is second to none. Last but not the least... On the one hand...on the other hand... Believe me, we use them frequently on our test ,any test : )