2.Many new buildings have been set up in our city ______.共两题类似题目

题目

2.Many new buildings have been set up in our city ______.共两题类似题目
2. Many new buildings have been set up in our city ______.
A. since five years B. in five years
C. in 2008 D. in the past five years
这道题目语法点?为什么不选D?
4. The ______ teachers wondered if the ______ students were in trouble.
A. women; boy B. woman; boys
C. women; boys D. woman; boy
为什么不选A?原因?
谢谢

答案

第一题应该选D啊
A,since后加点时间
B,用将来时
C,具体时间用过去时
而D,在过去的5年中,这种说法是用完成时的
第二题应该选A啊
只有man、woman后加名词变复数时是要前后一起变的,其他只要变后面的名词就可以了,所以woman要变复数women,而boy不用