Question

– Were you at school when I called you?
– Yes, I ________ in the library.
A. studied                      B. am studying                  C. was studying

Answer 1

C

試題分析：be+動詞的ing形式構(gòu)成現(xiàn)在進(jìn)行時，were/was+動詞的ing形式構(gòu)成過去進(jìn)行時，根據(jù)問句were及called，句意：我給你打電話的時候你在學(xué)校嗎？可知答語用過去進(jìn)行時，句意：我正在圖書館里學(xué)習(xí)。故選C。