Not until____________the exam _________ the importance of doing homework.
A.had he failed; he realized | B.he had failed; did he realize | C.he had failed; he realized | D.had he failed; did he realize |
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Not until____________the exam _________ the importance of doing homework.
A.had he failed; he realized | B.he had failed; did he realize | C.he had failed; he realized | D.had he failed; did he realize |