—Howdidtheaccidenthappen?—Youknow,it      difficulttose...

問題詳情：

—How did the accident happen?

—You know, it       difficult to see the road clearly because it      .

A. was; was raining     B. is; has rained     C. is; is raining     D. will be; will rain

【回答】

A

知識點：相似 相近詞比較

題型：選擇題