B. 根据课文的内容在每个空白处填入一个恰当的词。

Time is （61） , not tomorrow or next week. Start your plan at the  （62）  of the term. Go and buy a notebook today. Use it to  （63）  your study time each day.  （64）  a weekly study plan is prepared, follow the （65）  pattern every week with small changes. Sunday is a good day to make the plan for the  （66）  week. Often you know from experience how long it （67）  you to write a short essay, to study for a quiz,  （68）  to review for a final exam. When you plan time for these things, be  （69） . Allow  （70） unexpected things. Otherwise your entire plan may be upset.

（61）