– Why you didn’t handed in your exercise paper?
–Sorry, but I ____ that it should be turned in today.
| A．didn’t know | B．hadn’t known |
| C．haven’t known | D．don’t know |
Independent innovation has brought us a________in profits,40% higher than in the traditional way.
| A．boom | B．failure |
| C．decrease | D．suffering |
The ________ of school leavers that go to university is about fifty percent.
| A．degree | B．percentage |
| C．level | D．standard |
The generation________makes it difficult for parents to understand their children’s opinions.
| A．division | B．gap |
| C．separation | D．interval |
The Students’ Union was founded for the________of them.
| A．benefit | B．advantage |
| C．interest | D．value |
Don’t try to persuade your boss；he won’t have the________of employing me—a flesh student.
| A．intention | B．attention |
| C．sense | D．attraction |