----Have you fed the cat?----No but.A. I’mB. I amC. I’m just goingD. I’m just going to

问题补充：

----Have you fed the cat?

----No, but.

A. I’m

B. I am

C. I’m just going

D. I’m just going to

答案：

A. I’m

B. I am

C. I’m just going

(答案→)D. I’m just going to

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