If crime weren’t ________ problem in the U．S．, there wouldn’t be a need for ________ private home security companies．
A.a so big; so manyB.such a big; such manyC.such a big; so manyD.so big a; such many在线课程C
本题考查副词的用法。根据句型结构，第一处应在C、D项中选择，而第二处只能用so来修饰many。