The scientist __________ the experiment for half a year, but he _______ yet.
| A．made; didn’t succeed | B．made; hasn’t succeeded |
| C．was making; didn’t succeed | D．has been making; hasn’t succeeded |
“I am astonished, my dear,” said Mrs. Bennet, “that you _____ be so ready to think your own children silly.”
| A．might | B．could | C．would | D．should |
— Don’t be too ______ with what you wear as a middle school student.
— Come on, Mom, stop being _____ on me all the time.
| A．controversial, strict | B．particular, hard | C．considerate; keen | D．flexible; offensive |
This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we've done to the environment.
| A．have reflected | B．are reflecting | C．will reflect | D．reflected |
The Chinese abacus(算盘), officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
| A．having listed | B．listed | C．having been listed | D．listing |
— Tom seems not so enthusiastic as he was two years ago.
— Yes. He’s really reached a point in his career ______ he has to decide what to do next.
| A．that | B．when | C．where | D．which |