我提出几个问题,感谢大家能够回答我。
1 they used a scientific_____to do a lot of researchers on that subject.A.way B.method C.means D.manner 答案是B。这几个词有什么差别啊,谢谢
2. The house belongs to my aunt but she_____here any more
A.hsn't lived B.didn't live C.hadn't live D.doesn't live答案是D但是为什么不能用完成时啊,她“已经”不再在这住了。为什么不可以?
3.The population of our city tody is 20% as much as_____before liberation.答案填的是THAT,为什么不能用IT?有什么区别?
4.A good story does not necessarily have to have a happy ending,but the reader must not be left_____.A. unsatisfied B.unsatisfying C.to be unsatisfying D.being unsatisfied什么意思?答案选A,解释一下,谢谢