Can I help you?—Yes, I bought this radio here yesterday, but it _____________.

. As a volunteer, he often goes to the hospital to ________ the sick.

Jack, could you help me when the plane will take off on the Internet?-I’m sorry , ,my computer doesn’t work..

Why don’t you like winter in Beijing?— Because it is winter in Guangzhou.

My grandfatherus stories when I was young.