分类：教育/科学-学习帮助
问题：英语选择？？？？Hedidn'tknowhowdangerous 
He didn't know how dangerous a suation that hewas in____.A.when told  B.if toldC.until being told  D.until told__(press)together ,the two pieces of paper will stick.希望能解释一下，谢谢！！！
回答：D 直到他被告知才知道他处在多么危险的境地。
pressed 因为逻辑主语是paper，应该是被压在一起的。