PRACTICE TEST 4- Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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Only after they had completed the analysis to that degree _______ how to apply technology to the needs of our enterprise. A. did they ask to begin B. did they begin to ask C. they did begi

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Only after they had completed the analysis to that degree _______ how to apply technology to the needs of our enterprise.

did they ask to begin

did they begin to ask

they did begin to ask

to ask did they begin

Giải thích

Chọn đáp án B