1.He told me a new bridge ---- in his village the next year.

1.He told me a new bridge ---- in his village the next year.
A,built B.will build C,will be built D. would be built.
请给答案的同时给一个详细点的解释.
2.It's going to rain,---the sky is dark为什么用for?for当并列连词时解释成啥?
三克油.
那啥。第一题是选C啊。请选D的同学退避吧。因为我也选D。但答案是C。