It ____ now pretty late, we took our things and retired to our room. A) is B) being C) turned D) got
B) being 独立主格结构,因为后面的句子主谓宾已经齐全,所以前面的不能是正常的句子,即谓语得用动词的非谓语形式,所以把was换成being.
A it is now 经常组合 谢谢
