__________，there are 50，000 visitors to the exhibitionevery day.
| A．At average | B．By average | C．On average | D．To average |
—Have you ________ some new ideas?
—Yeah.I'll tell you later.
| A．come about | B．come into |
| C．come up with | D．come out with |
Walking alone in the dark，the boy whistled to ________ his courage.
| A．hold up | B．keep up |
| C．set up | D．take up |
I've ________ the habit of calling in on my grandparents on my way home from school.
| A．come into | B．gone into |
| C．got into | D．run into |
________ a moment and I will go to your rescue.
| A．Go on | B．Hold on | C．Move on | D．Carry on |
In modern times，people have to learn to ________ all kinds of pressure although they are leading a comfortable life.
| A．keep with | B．stay with | C．meet with | D．live with |