GWD语法请教！

goclair

T-9-Q13.987-184
Building large new hospitals in the bistate area would constitute a wasteful use of resources, on the basis of avoidance of duplicated facilities alone.D？/E 说什么虚拟语气用if only because更好

A.on the basis of avoidance of duplicated facilities alone

B.on the grounds of avoiding duplicated facilities alone

C.solely in that duplicated facilities should be avoided

D.while the duplication of facilities should be avoided

E.if only because the duplication of facilities should be avoided

goclair

while问题我也不是很懂。。哎
代词指代that 一会儿有一会儿没有

zoul1990

同求