He's ____ out because he isn't good at math.这个英文句子的横线处应填哪个单词,why?所填单词的首字母为S！

it ____(rain) tomorrow becaus it's cloudy and windy today. He is the ____(last) one to work out the problem.He's very happy. Tom is always out at the moment.He’s ____ holiday. Tom's mother said that he was out when I visited him同义句Tom's mother said that he wasn't ____ ____ when I visited him 英语看图填词He ____ out of the window.He saw that his neighbour's house was ___fire He's ____ out because he isn't good at math.这个英文句子的横线处应填哪个单词,why?所填单词的首字母为S！ Can he work out the problem (同义句） ____ he ____ ____ work out the problem? Can he work out the problem?(同义句） ____ he ____ ____ work out the porblem? He spent hours cleaning out the room.(改同义句） He ____ hours ____ ____ out the room.如上所述 It was Sunday yesterday.He didn't have to ____.Early in the morning,he went out to see his uncle in the ____ on his bike.It was about thirty ____ from his home to his uncle's.He rode very ____.At a quarter to seven,he was near his uncle's house.He wa pimp out 如:He pimped out David's MySapce page. it's ____(sun) today.let‘s ____(go) out ____（play） What's he doing?He's ____ (做）cakes. He ____(put) on his coat and goes out he was seen ____(go) out by me He couldn't work out the math problem.(改为同义句) He ____ ____ ____work out the math problem. He's thirteen.=____ ____is thirteen He's a police ____ (office）