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I was really too busy with my homework and I couldn't help ____________

housework.

A. doing        B. do               C. did          D. done 

I was really too busy with my homework and I couldn't help ____________ housework.

A. doing        B. do               C. did          D. done 

I was really too busy with my homework and I couldn't help ____________ housework.

A. doing        B. do               C. did          D. done 

I was really too busy with my homework and I couldn't help ____________ housework.

A. doing　　　 B. do　　　　　　　 C. did　　　　 D. done

I was really too busy with my homework and I couldn't help ____________ housework.

A. doing        B. do               C. did          D. done