TUTorial getting harder sia~~~

OMG,don no the paper become harder or i become stupid liao,cos my ans is totally wrong compare wif the ans sia,unbelievable sia,i tin the ans is wrong lox,cos i cannot spot any mistake sia,my Teacher like to make careless mistake sometime,hehe,don wan to admit tt i am wrong hehe,really really have to work hard liao la(although i alred work veri hard liao),haizzzzz conCLusion is smart pp DOn like to do tutorial COs the paper is SO SO SO SO EASY......zzzzzz