—Can we ski on this mountain?
—Of course.However, at no time _______ you do so alone.
| A．could | B．might |
| C．need | D．must |
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 |
Tom was for you to come to his birthday party.
| A．eager |
| B．worried |
| C．providing |
| D．considerate |
Usually John would be late for meetings. But this time, ________ to my surprise, he arrived on time.
| A．little |
| B．much |
| C．ever |
| D．even |
People found him still after the road accident, so they sent him to the hospital at once.
| A．live |
| B．lively |
| C．living |
| D．alive |