Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _______ introduced the idea in 1953 _______ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that | C．what; that | D．which; when |
— It’s difficult to buy a ticket online because of the 1 billion clicks daily.
—_____________. There can be errors for every single step.
| A．Forget it! |
| B．Don’t mention it. |
| C．Nothing is impossible. |
| D．I can’t agree with you more. |
We haven’t reached any agreement in the discussion ______ neither side would give way to the other.
| A．unless | B．when | C．as | D．though |
The worst thing about the do-it-yourself game is ______ sometimes even men live under the delusion（错觉） ______ they can do anything, even when they have repeatedly been proved wrong.
| A．that；what | B．what；which |
| C．that ；that | D．what；that |
Whatever sport you take up, you can make it greener by using environment-friendly equipment and ___ products ______ from recycled materials.
| A．buying; made | B．buy;making |
| C．bought; made | D．buy;making |
At sixty, Maugham decided to withdraw from the theater and wrote The Summer Up,______he tried to review ________he had learned from his life and literature
| A．where；what | B．in which ;that |
| C．which; what | D．that; which |