it is important to provide clear,frequent,precise presentati

it is important to provide clear,frequent,precise presentati It is important to provide an environment ________ people ar it is important to be clear.这里为什么要加be?为什么不说it is important t 英语翻译It is hard to define the precise pleasures of the superm Do you think it’s important for school to provide sports fac He tried to make it clear to us ____ he did an important job it is clear that sleeping is necessary to everyone it is not clear to me that/how. Is it clear enough for you to read? it is very important to people it is important to learn English It is important ______us to learn English.