Three fourths of the homework _________ today.
| A．has done | B．has been done | C．have done | D．have been done |
I’m not a little tired today after giving the room a thorough cleaning and I have never had ______today.
| A．as tiring a day as | B．as a tiring day as | C．tiring as a day as | D．day as a tiring as |
—I thought you ______ for vacation tomorrow.
—I had planned to, but I have a very important meeting to attend tomorrow.
| A．will leave | B．are leaving | C．have left | D．were leaving |
The development of industry has been ____gradual process throughout _____ human existence, from stone tools to modern technology.
| A．不填; the | B．the; a | C．a; 不填 | D．a; a |
The police are trying to find out the ____ of the woman killed in the traffic accident．
| A．evidence | B．recognition | C．identity | D．status |
---I got a rise in salary! ---_____________.
| A．Yes, I think so. | B．You did? | C．Are you? | D．My pleasure. |