This is a backpack in E( ).根据句意及首字母提示不全字母.

This is a backpack.（对.backpack提问） This is ablue backpack.(改错为否定句)This a blue backpack.咋填 a backpack.A.That is B.This is This is a backpack in English（同上）划线部分：a backpack This is a black backpack改为同义句 this is a blue backpack改为一般疑问句 This is a blue backpack改为同义句 This is a backpack(改为复数句子)怎么改? your backpack is very nice .I wantmy mother to buy ____.A.one B.this C.it D.that 英语填空,补充句子,英语大师进,A：Can I help you?B：I lost my ( 1 ).A：Where did you lost it?B：( 2 ) the playground.A：Is ( 3 ) your backpack?B：No,( 4 ) .My backpack is blue.This one is small.A：Is this ( 5 ) backpack?B：No,( 6 ) Whose backpack do you think ____?A.THIS IS B,IS THIS In the lost and found case:A:Can I help you?B:I can't find my ( )A:Is it on the desk?B:No,( )isn't.A:Is ( ) your backpack?B:No,it ( ).My backpack is( ).That one is small.A;What about this one Is it ( B:No ,( )is blue.This one is green.A:How about tha What's this?This is a backpack这个句子有问题吗? 1.I think this backpack is _____ heavy for such a little boy to carry.A.so B.very C.too D.enough最好能说明原因... is this your backpack?翻译成中文 This is my backpack.改成复数形式 This is his backpack.改成否定句 is this your backpack?翻译成中文