-- Hi, Grace, you look tired.
-- I'm tired. I ____________________ on my homework all day.
| A．worked | B．had worked |
| C．have been working | D．have worked |
There existed an obvious ________ between the accounts of the witnesses, so a judgment was not announced in court.
| A．association | B．authority | C．conflict | D．restriction |
Although police could be seen everywhere, they seemed to be searching the houses almost ________.
| A．at ease | B．at random | C．at risk | D．at length |
The national team’s unexpected 6-2 win on Friday ________ a drunken celebration that lasted well into weekend.
| A．held up | B．put forward | C．set off | D．tore down |
With the situation worsening, the army threatens to ________ if a general election is not to be held as scheduled, BBC reports.
| A．take up | B．take over | C．take on | D．take apart |
Miss Green often said “God helps those who help themselves”, intending to ________ on us the significance of being independent.
| A．base | B．impress | C．focus | D．rely |