—What______you _______at ten o' clock yesterday﹖ —I_______ in class.A、were doing studiedB、was doing was studyingC、were doing was studyingD、was doing studied
—What______you _______at ten o' clock yesterday﹖ —I_______ in class.
A、were doing studied
B、was doing was studying
C、were doing was studying
D、was doing studied
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