―Where is your mother, Jack? ―She is busy a cake. I will have a birthday party tonight. A. make B. made C. making D. to make 【查看更多】

 

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－Where is your mother, Jack?

－She is busy ________ a cake．I will have a birthday party tonight．

[　　]

A．make

B．made

C．making

D．to make

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