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 |
A.occupied | B.absorbed | C.devoted | D.concentrated |
A.see | B.had seen | C.saw | D.have seen |
A.are rising | B.rise | C.had risen | D.have been risen |
A.offer | B.will offer | C.are offered | D.will be offered |
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