1.Whether or not the new plane will yield any positive results__to be seen.
A,remain B.is remianed C,remains D.hae remained
这个题为什么不选b?
2.He asked me whether these islands__to China.
A.belonged B,belong C.are belonged D.have belonged
这个题为什么不选A呢?不是都是过去时么?
3.We are all astonished to learn that the apparently__professor was really a spy.
A.respectful B.respective C.respectable D.respected
求这四个选项的区别,我总是分不清
4.If that idea is wrong,the project is bound to fail,__good all the other ideas might be.
A,whatever B.though C.whatsoever D.however
这个题选什么?为什么?