my younger brother couldn't work out the answer and(

My young brother couldn't work out the answer and ( ) 为什么填“n My younger brother worked out the problem quite__________(ea I'm ashamed that I couldn't work out the problem,___ my clas my parents are out and i have a younger brother(to care for) My younger brother () the army () 1990. The little girl couldn't work the problem out.She wasn't ___ 英语句子 If you don't help me ,I couldn't work out the math prob The little girl couldn't work out the problem.she wasn't___c My brother chould not work put the answer and_____ 选择A .so c 同义句：Tom told his teacher he couldn't work out the probloms. I couldn't find another way ____ the problem A to work out B He couldn't work out the math problem.(改为同义句) He ____ ____ _