this is( )they solved the problems in the cityA.when B.that C.what D.how
问题描述:
this is( )they solved the problems in the city
A.when B.that C.what D.how
答
D.how
这是名词从句中的表语从句.
这句的意思是:这就是他们在城市怎么解决问题的.