Even if they are on sale, these refrigerators are equal in price to, if not more expensive than, _____ at the other store.
| A．anyone | B．the others | C．that | D．the ones |
Mr. White works as a journalist at present, but he in a high school for several years.
| A．has worked | B．worked | C．had worked | D．has been working |
How can they learn so much they spend such a lot of time hanging about?
| A．although | B．when | C．before | D．until |
The students in the university are all taking courses to a degree.
| A．lead | B．leading | C．led | D．to be leading |
There is no in trying to talk George into joining us. He enjoys being alone.
| A．doubt | B．wonder | C．hope | D．point |
An advertisement is useful in it can persuade customers to but the kinds of goods in the shop.
| A．that | B．which | C．what | D．whether |