下面的是2009年的北京卷高考题：Being a parent is not always easy, and being the parent of a child with special needs often carries with ________ extra stress. A. it B. them C. one...
以下几句话：1. This is the room in which he was.2. This is the room which/that he was in.3. This is the room where he was.4. This is the cage in which a dog was.5. This is the cage which/that a dog wa...
According to Cisco, a maker of networking gear, video accounted for 70% of global internet traffic in 2015, a share it thinks will increase to 82% by 2020.请教一下这个句子的结构和句法成分?并列句还是定...
①He wrote the most essays on Victorian novels in his class. the most为什么可以用在essays这个名词前the most不是应该用来接形容词再修饰名词吗？ ②The student spent__B___their time working in the fields....
Sir Alexander Fleming did not, as legend would have it, look at the mold on a piece of cheese and get the idea for penicillin there and then.上句可改写为：Sir Alexander Fleming did not look at the mol...
If we_______200 years old,we______everything.A.were to be,could change B.had been,changed C.were,would have changed D.should be, changed.这道题，C为什么不对，从句对现在事实的虚拟，主句对过去事...
The companies are working together to create________they hope will be the best means of transport in the 21st century.A.which B.that C.what D.whocreate后面跟的是宾语从句吗, what they hope又是什么...