D說(shuō)下理由吧1.A.中 what made matters worse是插入語(yǔ)，不能寫(xiě)為主語(yǔ)從句式的主從復(fù)合句，正確的為：,and what made matters worse， night began to fall.2.B.中what was worse,缺少make是不能構(gòu)成插入語(yǔ)的，改為：what made matters worse, it was getting dark.3.C中to make matters worse that night was falling作為插入語(yǔ)的部分應(yīng)該用逗號(hào)獨(dú)立出來(lái)，改為：to make matters worse, night was falling4.D中worse still,可以作為插入語(yǔ)使用，并有逗號(hào)和后面的句子night had fallen分割開(kāi)來(lái)，正確5.他們當(dāng)時(shí)在森林里迷了路，并且更為糟糕的是，夜幕已經(jīng)落下了。不懂再問(wèn)哦，祝你學(xué)習(xí)進(jìn)步！