When the farmers dug the well, they _____ a large collection of ancient china.
| A．came by | B．came around | C．came up | D．came across |
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 |
Mary and I see each other ____, but not as often as we used to.
| A．sooner or later |
| B．once in a while |
| C．in the end |
| D．more or les |
China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing boatsfrom ______in the South China Sea.
| A．attacking |
| B．having attacked |
| C．being attacked |
| D．having been attacked |