So far the construction of the two new bridges over the river ________..haveSo far the construction of the two new bridges over the river ________.A.have been completed B.has been completed

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Sofartheconstructionofthetwonewbridgesovertheriver________..haveSofartheconstructionofthetwonewbridg

So far the construction of the two new bridges over the river ________..haveSo far the construction of the two new bridges over the river ________.A.have been completed B.has been completed
So far the construction of the two new bridges over the river ________..have
So far the construction of the two new bridges over the river ________.
A.have been completed B.has been completed

So far the construction of the two new bridges over the river ________..haveSo far the construction of the two new bridges over the river ________.A.have been completed B.has been completed
B.has been completed.
分析:
句子的主语是the construction,属于抽象名词,视为第三人称单数,所以谓语动词是has been...