8.Customers are asked to make sure that they ____ the right change before leaving the shop.

She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.

I think her dress comes from the1970s.—It_________ be from that time. Itlooks so modern on her.

With the help of the Internet, information can_____every corner of the world quickly.

I think Tom, as the head of a big department, should either study regularly or ________ his job. [ ]