★ Gerund & Participle
_________ their 3-year marriage, the husband regretted _________ his wife well.
A. Looking back on/not to have treated
B. To look back on/ not treating
C. Looking back on/not having treated
D. To look back on/not having treated
Preview next quiz:
__________ to represent the Association of American Engineers at the International Convention, he gave a short acceptance speech.
A. Having been selected
B. Having selected
C. Selecting
D. Select
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