She said "No, thank you" and rang off hurriedly.

她说了一句 不了 多谢 就匆匆挂了电话

Great, I need to ring off.

好了，我要挂电话了。

I'll have to ring off now.

我现在得挂断电话了。

Look I 'll ring off now.

我现在要挂断了。

I'd better ring off now.

我该挂电话了。