__________your parents __________ Yes, they do.

下列各句中，表达得体的一句是

Did you hear the news about the fire in our building—Yes. It took the firemen two hours to_______ the fire.

I’ll be away on a business trip for a week. Would youmind looking after my dog—Not at all. ________.

Are you happy with this lab?—Not a little. We can’t have _______.