下列各句中，没有语病的一句是（ ）

The belief that the children of working mothers usually suffer isby most scientists

__ these brochures among the touristsbefore you leave, will you

Jack, do you know the answer ______ this question It’s too difficult for me.— Sorry, I don’t know. You can ask Jim for help. He is good at math.

Would you please this picture the wall—Sure, my pleasure.