The Roman people originally lived in northwest India in ＿is now southeastern Pakistan .A .what B .which .C that .D where (我知道是宾语从句且充当从句主语,那为什么只能是what不能是 which which也可以引导宾语从句啊!而且它不可以充当主语吗?) 2.＿on the top of the hill is a monument ,dating back to hundreds of years ago .A .having stood.B .Standing C .being stood .D having been stood 3.The split between human and living apes is thought by some scholars ＿15to 20million years ago .A .to have occurred .B .having occurred .C .to occur D .occurring