Question

--- Were you at school when he came to see you ?
---- Yes, I __________ a math class .
A. had           B. was having        C. am having

Answer 1

B

試題分析：句意：當他來看你的時候你在學校嗎？是的， 我當時正在上一節數學課。根據上下句可知是過去進行時態，故選B。