问题
选择题
.
The bridge being built there _______ by the time you come back.
A．has been completed
B．will have been completed
C．will complete
D．has completed
答案
答案：B
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.
The bridge being built there _______ by the time you come back.
A．has been completed
B．will have been completed
C．will complete
D．has completed
答案：B