Have you _____ your things, Bob? The train is leaving at 2:30 this afternoon, so we don’t have too much time.
| A．added up | B．hidden away | C．set down | D．packed up |
The next generation of telescopes will reveal（显露；揭示）new parts of our universe that will seem surprising, just as the moon’s craters（坑） when observed 400 years ago．
| A．could seem | B．might seem |
| C．should have seemed | D．must have seemed |
The average cost of school residential trips was ￡ 48 in primary schools and ￡ 55 in secondaries in 2003, but ￡ 144 and ￡ 274 in 2009．
| A．regularly | B．relatively | C．respectively | D．responsibly |
For areas that receive regular and plentiful rainfall, such detailed crop monitoring（监测）might not be useful or ;
| A．economy | B．economic | C．economical | D．economics |
But the next thing I knew, the car stopped, the airbags had , the windscreen broke, and smoke was coming out．
| A．broken off | B．gone off | C．cut off | D．turned off |
His mother hardly seemed to notice as the boy go of her hand．
| A．let | B．made | C．had | D．got |