(One more hour) and I'll get the work finished.

(One more hour) and I'll get the work finished.
A、Have one more hour
B、one more hour
C、Given one more hour
D、If I have one more hour 选 B ,1、A\B\C\D求详细解释,本人语法不好,在自学中2、D项不可以?两个句子用and连接不很好吗?