Scientists think they have _____ in their attempt to find the causes of some major dieases.
| A．broken through | B．worked out |
| C．fallen out | D．got round |
Jenny nearly missed the flight _____doing too much shopping.
B. on top of
C. in front of
D. in need of
IF you leave the club , you will not be back in.
| A．received |
| B．admitted |
| C．turned |
| D．moved |
At the railway station, the mother waved goodbye to her daughter until the train was .
| A．out of sight |
| B．out of reach |
| C．out of order |
| D．out of place |
The coach asked his staff tothe large group of journalists, waiting for him to announce his training plan.
| A．adapt to |
| B．attend to |
| C．refer to |
| D．appeal to |
The human race has already paid a heavy price for its slow to environment threats.
| A．response |
| B．responsibility |
| C．resolution |
| D．resistance |