i'm so sorry...really sorry...in fact,today (sat)i want to call u to invite u coming with me...but the time is 9 am...i afraid u may not wake up...fion,don't worry as u exam on friday but i in wed...so u have enough time,at least enough than me,anyway,i feel very sorry...in fact,at the begining,i consider that u are not come with us today as u told me u need to補習...so sorry...