试题题干
In Old English, word order was freer because the case endings were rich. So in Old English, word orders included SVO, VSO, SOV and OSV. However, Modern English has a much weaker case system, so its sentences have to follow a basic word order of（ ）
参考答案
正确答案：
试题解析
本题主要考查英语的句法历史变化。在古代英语时期，词序更加自由因为格词尾较多。因此在古英语时期，词序包括主谓宾，谓主宾，主宾谓和宾主谓。然而现代英语由于格系统的削弱，因此它的句子必须遵从主谓宾的基本词序。答案为B