Mr. Black must be worried about something. You can ____ it from the look on his face.
| A．reason | B．recognize | C．read | D．realize |
The price has been .Can you go and buy one?
| A．gone up | B．brought up |
| C．gone off | D．brought down |
The experiment the discovery of a cure for cancer.
| A．resulted in | B．resulted from |
| C．brought in | D．ended in |
The problem many children have out of school is getting more and more serious.
| A．that;dropped | B．which;got |
| C．of;fallen | D．as;run |
It won’t work:,it’s a bad idea,and secondly it’ll cost too much.
| A．above all | B．to begin with |
| C．first of all | D．at first |
The blame for this accident the man who destroyed the signal.
| A．was laid | B．was attached to |
| C．attached to | D．was put |