So suddenly _____ that the animals in the zoo looked very frightened during the total solar eclipse ( 日全食).
A.did the sky turn dark | B.the sky did turn dark |
C.turned the sky dark | D.was the sky turned dark |
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So suddenly _____ that the animals in the zoo looked very frightened during the total solar eclipse ( 日全食).
A.did the sky turn dark | B.the sky did turn dark |
C.turned the sky dark | D.was the sky turned dark |