because of his _ on his studies,he didn't notice me passing by.(集中精力)答案为concentration,能不能用focusing

because of his _ on his studies,he didn't notice me passing by.(集中精力)答案为concentration,能不能用focusing He _ (keep)standing outside for an hour by his father yesterday because of his mistakes. Because of his _ (ill) he is often late for school.(词形变换） Tom didn't attend the lecture yesterday evening _ his illness.A as B.for C.because D because of jam,his,on,the,missed,his,because of,airport,way,father,the,traffic,to,his,flight（连词成句） He didn't come to school on time because of _ _ _(有雨)He didn't come toschool on time because._ _ _ _(有雨)He didn't come to school on time because ___(天下雨) Some words are missing because of a virus on his computer同义句 his working什么的意思 词性 he has poor eyesight because of his working on the computer too much. because of the heavy rain 同义句because it _ _ _后面三个空 Some words are missing because of a virus on his computer同义句Some words are missing ----- ----- ----- a virus on his computer. His parents criticized him because he didn't come back home on time.求大神改为被动语态.He_ _ _his parents because he didn't come back home on time. Hercules knew that he couldn't fight him because of the sky on his back中文意思 -Where are his family?-They are all _ vacation now.A.at B.of C.on D.for It's possible for her _(not join) his party,because she is tird of him.I often hear the girl _(play) the violin in her room.Can you hear her _(play) at the moment? He got wet all over _____ a heavy rain on his way home.选择( ).快些.理由要有A.because B.because by C.because it was D.because of He failed his math examination because of his careless.改错! his cousin failed in the exam because of his c____ Tom didn't hear a single word because of the loud noise. _ _ _ _ _Tom _ because of the loud noise.一空填一词~~求~~