— Hi，Michelle， I can’t find my e-dictionary.
— Sorry，I it. I guess I put it on the top shelf with my things.
| A．had used | B．used | C．was using | D．am using |
_______ the task on time, he was fired by the boss.
| A．Not completed | B．Not having completed |
| C．Not have completed | D．Not being completed |
I admit that there are problems, _______I don't agree that they cannot be solved.
| A．While | B．If | C．In case | D．Before |
—Why, Jack! Someone seems to have called you over there.
—Yes? I _______ that.
| A．am not realizing | B．haven't realized | C．didn't realize | D．don't realize |
In order to improve English listening, _______.
| A．he bought a Walkman |
| B．his father bought him a Walkman |
| C．a Walkman was bought by him |
| D．a Walkman was offered to him |
Twenty students from one high school were _______ such an experience.
| A．enough lucky to share | B．to share enough lucky |
| C．enough to share lucky | D．lucky enough to share |