It was several minutes before I was ______of what was happening
| A．know | B．realize | C．wear | D．aware |
With all the tasks finished ahead of time, she felt a great weight her mind.
| A．picked up | B．ended up | C．taken off | D．put down |
A fire broke out in the neighborhood last night. By the time the firemen arrived, it .
| A．had been put out | B．would put out |
| C．has been put out | D．was putting out |
For some reason, we hurriedly ended our meeting, a lot of problems to be settled.
| A．leaving | B．to leave | C．leave | D．left |
Either you or one of your students _______to attend the meeting that will be held tomorrow.
| A． are | B．is | C．have | D． be |
— How long has your brother been working in this factory?
— he graduated from college.
| A．When | B．By the time | C．Until | D．Ever since |