Add punctuation: You can choose to reject cookies by adjusting your web browser
A: You can choose to reject cookies by adjusting your web browser.

Add punctuation: We are up against big American corporations with plenty of capital and yet we have still managed to develop a better product
A: We are up against big American corporations with plenty of capital, and yet we have still managed to develop a better product.

Add punctuation: And then asked the firtree trembling through all its branches and then what happens
A:
And then, asked the fir-tree, trembling through all its branches, and then what happens?