He ___ the army when he was eighteen years old.A took part in B joined C attended D joined in应该选哪个?为什么?

My brother ___(join) the army when he ___ (be) 20 and he ____(be) in it for 5 years 同义句型转换（英语） He joined the army ten years ago.He joined the army ten years ago.①___ ___ ten years ago ___ he joined the army.②___ ___ ten years ___ he joined the army.③He ___ ___ in the army for ten years.④Ten years ___ ___ He ___ the army when he was eighteen years old.A took part in B joined C attended D joined in应该选哪个?为什么? he said he ___(join) the army after he left the college 用所给单词的正确形式填空：1．My father ___(join) the army when he was 16 years old in 1947. 改错He wants to enter the army when he grows up. tom always loves ships.when he was young完形填空Tom always loves ships.When he was young,he said,___(1) going to the army.But his eyes were not very good,___(2) he did not get in.Then he said,I'm going to buy a small ___(3),and I'm going to go He join the army when he was fifteen(保持原句意思）He join the army__ __ __ __fifteen. He served in the army in the 1940's,when he was in his twenties.怎么翻译, my brother is 16 years old,he cantjoin the army ( 同义句）my brother is too ___ to join the army ( 同义句） It was ten years ago ___ joined the armyA.that B.when C.since D.where为什么是选A而不是C？打错了，少了一个he应是It was ten years ago ___ he joined the army。再追问一道：The article was said ___ in that magazine.A.to printB.to He ( ) the army when he was eighteen years old.A.took part in B.joined C.attended D.joined in He wants to join the army when he leaves school.Te be a s____ is his dream. 根据课文填空（英语）When Jimmy ______ a boy healways liked watches _____ clock very _____.When he was eighten ______ old he went in to the army and after a year he began ____mend wathe.A____ of friends ___ him broken wathes and he men ded t A large army marched past the farmyard.When a doctor doctors another doctor,does he doctor the do he joined the army last year he was ageneral in the army Lei fend always of others when he in the army.有三个词,is thinking is用什么正确形式?