重写句子：I have checked my documents several times. I still can’find t the problem.(compound sentence)

Iwasreallyanxiousaboutyou.You______homewithoutaword.

重写句子：Alan passed the test. Alan had studied hard. Alan had understood the material.(complex sentence)

Ifyou_______inbehavinginthiswayyouwillbringyourselfnothingbuttrouble.

写信( 40 points)

Write a letter according to the following situation: the Wenchuan earthquake has made this winter extremely difficult for the victims. Write to tell your friend Smith that you are raising money to buy 200 pieces of cotton-padded clothing and some other necessities for the earthquake victims. Ask him to join the charity and show your appreciations for his help.Don’ t forget to tell him your phone number555-5555for further discussion. Please sign your name as Li Ping. (150-200 words)