---Ididn’tseeyouatthebeginningofthepartylastnight. ---...

問題詳情：

 --- I didn’t see you at the beginning of the party last night.

  --- I ______ on my report at that time

A. worked   B. work  C. was working  D. am working

【回答】

C

知識點：動詞時態

題型：選擇題