题目内容:
Sofartheconstructionofthetwonewbridgesovertheriver__________.
A.havebeencompleted A.havebeencompleted
B.hasbeencompleted
B.hasbeencompleted
C.hascompleted
C.hascompleted
D.havecompleted
D.havecompleted
参考答案:
答案解析: