I am Tigger.I’m Winnie’s good friend,too.Winnie’s birthday is coming.I’m so happy.Look!Iam(A.sing and dance B.singing and dancing)注:am在I后面A\B是选的

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I am Tigger.I’m Winnie’s good friend,too.Winnie’s birthday is coming.I’m so happy.Look!Iam(A.sing and dance B.singing and dancing)注:am在I后面A\B是选的

I am Tigger.I’m Winnie’s good friend,too.Winnie’s birthday is coming.I’m so happy.Look!Iam(A.sing and dance B.singing and dancing)注:am在I后面A\B是选的
I am Tigger.I’m Winnie’s good friend,too.Winnie’s birthday is coming.I’m so happy.Look!I
am(A.sing and dance
B.singing and dancing)注:am在I后面A\B是选的

I am Tigger.I’m Winnie’s good friend,too.Winnie’s birthday is coming.I’m so happy.Look!Iam(A.sing and dance B.singing and dancing)注:am在I后面A\B是选的
B
现在进行时
我正在又唱又跳

肯定是B

am singing and dancing

选B。 l am singing and dancing现在进行时 ,我正在又唱又跳 。绝对正确

百分之百选B。
I am...我正在干什么,后面要接正在进行时。
所以sing和dance都必须要加ing.
不加的话只能表示一般现在时。与I am不能匹配。

B 现在进行时

是地,不是B的话,那难道还是A么。