some birds are singing in the tree.改为一般疑问句

There are some birds s___in the tree. There are some birds singing( )the trees some birds are outside 填什么 window There are some birds in the trees对some birds 提问 There are some birds in the sky改一般疑问句 There are some birds in the tree.改为一般疑问 There are some birds on the tree.的否定句 There are some birds in the tree改为一般疑问句 There are some birds on the tree.的一般疑问句 some birds are singing in the tree.改为一般疑问句 如：There are some birds in the picture There are some birds in the tree.对what提问 翻译：Some birds are very lively in their sports . Some birds are flying in the() skyc开头的单词 I often hear birds ( )in the morning?是填to sing 还是填singi There are some birds ( )the tree and there are some apples( )the tree There are some brids in the tree.(对some birds提问 括号里要填in还是on?There are some apples and some birds ( ) the tree.