When they were 12years old,the three boys _____Chinese Young Pioneer(成为中国少先队员)

When they were oh when they were young after they were born 和 when they were born We were happy when they left. They were all wet when they arrived at school.:Were they?Did they? They were singing whenwe were dancing可以用when 1.Go down the street ____ you sea the third crossing.A.though B.since C.until D.while 2.I didn't hear _____ he said just now.A.that B.what C.which D.it3.They were reading _____ the lights went out.A.as B.when C.while D.until4.-This dress was last yea What____fun the children are having!Yea.They are always happy when they play____chess togetherA./ ; / B.a;/ C.a;the D./;the They were surprised when they hear the news 同义句如题 They __an earthquake when they were traveling in Sichuan province 用when合并句子!They came home.They were wet. They were surprised when they heard the whisper.They were surprised ----- ----- the whisper. When they were 12years old,the three boys _____Chinese Young Pioneer(成为中国少先队员) They were students when they were in their( )为什么是twenties? They were like olf friends and they were pleased when the plane landed safly 改错 some people hurt themselves when they were watching a sports programme.who were they? They were talking ( ) a film when come ( ) the room Who invented the aeroport?when were they born?