中考临近，Tom经常很烦闷，晚上睡不着，上课注意力不集中，经常想着万一考不上怎么办？

于是他给某报社的心理医生Mr. Green写了一份e-mail进行咨询，希望他能给自己一些建议，以便在

冲刺阶段能全力以赴。

Dear Mr. Green,

      I'm sorry to trouble you. You know there will be a / an 1_____ exam this term. But it seems that everything

goes wrong with me. I can't fall 2_____ at night and I can't listen to the teachers carefully. I am always 3_____ about my grades. I know it is not good to do so, but I can't control myself. 4_____? 

Write to me soon. Best wishes to you!

                                                                                                                                         Yours,

                                                                                                                                           Tom