Yesterday they d___ they would join the school speech contest( 比赛 ) .

Yesterday they d___ they would join the school speech contest( 比赛 ) . They ( ) yesterday? They f_____to Beijing yesterday. yesterday it was d___ that the lion in the zoo disappeared填什么 They were played baskball yesterday Yesterday they( )(have) at school they __ at home yesterday What did they do yesterday? I () what they did yesterday They()(flew)to Shanghai yesterday some students often ask their friends for help when they have d___. The children aeen singing and d___.They are h__a birthday pirty if we don't start to protect bats,they will d___ out in the future. The children aeen singing and d___.They are h__a birthday pirty. Look,they are d___ when to go out for a picnic. The girls played so carefully that they d___ to win this match. Then did homework yesterday.对did homework提问 ( )( )they( )yesterday. they were here yesterday.怎样改疑问句?