下列各句中，没有语病的一项是（ ）

Can I change for a quiet room This one is too noisy.–Sure, you can. But you need to pay for________20 dollars.

Machines help peole do ___ work with ___ time.

If you want to find some information about a foreign country, you can ask your friends _______ have been to that country

Sir, can I feed the panda It’s so lovely.—Sorry, you_____.