Thedoctorcouldseethattheoldman

問題詳情：

The doctor could see that the old man ___________ when he came into the room.

    A. dying         B. was dying          C. was died           D. is dead

【回答】

B。was dying是用進行時態表示過去將來時。

知識點：動詞時態

題型：選擇題