– Professor Johnson has announced that the exam will be given soon.
---That is not fair.How much time ________ for us to prepare?
A.there is B.is there C.it is D.is it
为何不选d ,两者有什么区别,
.Any parent hopes to gain the best education possible for ________children.
A.his B.her C.their D.they
为什么不选b?