WhileI

問題詳情：

While I ________to the programs, my mother ________outside.

A. listened; was washing                                      B. was listening; washed

C. was listening; was washing                               D. was listening; is washing

【回答】

C  兩個動作同時進行，都應用過去進行時或現在進行時，故選C。

知識點：動詞時態

題型：選擇題