----Why? Tom, your shirt is so dirty?
----Mom, I____ my store room downstairs.
| A．cleaned | B．have cleaned | C．was cleaning | D．have been cleaning |
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 |
To protect the environment, the local government has ______ a lot of signs to warn the citizens not to litter the ground.
| A．add up | B．take up |
| C．set up | D．put up |