12br 12br 10B) was studying / had not / been discovered12br 10E) studied / had not / been discovered12blockquote 10In this context, there are two logically and grammatically acceptable answers. 02br 02br 00 00The reason had been discussed and explained a few times before. 00 00Obviously, “studying at Yale “was a rather long period of time”, so past progressive is 00preferred in this context.
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01cite10Diamondrg12cite10Which one is correct?12br10In this cont
12br
10When I ---- astronomy at the University of Yale, quasars ---- yet ---- discovered.12br
12br
10B) was studying / had not / been discovered12br
10E) studied / had not / been discovered12blockquote
01cite10Diamondrg12cite10Which one is correct?12br
12br
10When I ---- astronomy at the University of Yale, quasars ---- yet ---- discovered.12br
12br
10A) studied / was not / discovered12br
10B) was studying / had not / been discovered12br
10C) had studied / was not / discov