he began to learn English in his ----- a.thirtieth b.thirty c.thirty‘s d.thirties为什么不能是b

When Kari was over fifty,he began to learn Russian.When Kari was________ his ________,he began to learn Russian He began to learn English when he was eleven 谓语是哪个He began to learn English when he was eleven 谓语是哪个 He began to learn English when he was four years old(同义句) He began to learn English _________要真确的，不给不要回 改为同义句：He began to learn english when he was six years old.He began to learn english ___ ___ ___ ___six.(每空一词） He began to learn English last year 同义句 He ____ ______ English for a year 英语单词连词成句forties/ English/ to/ was/ began/ he/ his/ when/ he/ in/ learn He began to learn the piano when he was?(改为同义句) He began to learn to look after himself yesterday变强调句 4.At the age of four,the boy began to learn drawing.(改为状语从句)________ he ________ four,the boy began to learn drawing. my uncle began to learn horse horse riding at the age of four的同义句 my uncle began to learn riding --- he ---- he began to learn the accordion at the age of four jack began to learn paintingwhen he was seven 改为现在完成进行时 改为现在完成时：Jack began to learn painting when he was seven. He began to learn Chinese in his _____.A.fifty B.fiftieth C.fifties D.fifth .I’d like to know ________ Chinese.A.when he began to learn B.when did he begin to learnC.when did he begin learning D.for how long he began to learn 直接引语和间接引语I'd like to know _____ Chinese.A.when he began to learnB.when did he begin to learnC.when did he begin learn D.for how long he began to learn He began to learn Chinese(when he was 5 years old)对括号部分提问__ __ he__ to learn Chinese? 英语一道保持原句意思George began to learn computer when he was ten.George ______ begin to learn computer _______ he was ten.