He insisted that he the best so he insisted that he the work all by himself.A. was; doB

问题补充：

He insisted that he the best, so he insisted that he the work all by himself.

A. was; do

B. be; do

C. be; did

D. had been; had done

答案：

(答案→)A. was; do

B. be; do

C. be; did

D. had been; had done

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