下列各句中，没有语病的一项是（ ）

She _____ a bit of money every month for her son’s future education.[ ]

I don’t know _____ he will come or not. _____he comes, I’ll tell you.

These fish can’t be taken out of the water _____ which they will die soon

_______ can the batteries (电池) keep these cool iPhones and iPads working- For about ten hours.