Facing the dangerous situation, he was completely ____________.
| A．at loss | B．at a loss |
| C．out of order | D．out of sight |
Too high house prices can be brought under control，the authorities introduce a series
of regulatory policies．
| A．even if | B．as if | C．so that | D．provided that |
all kinds of difficulties，the workers have made rapid progress in the construction of
the World Expo 2010 Shanghai．
| A．With | B．For | C．Under | D．Beyond |
—Bob! How’s your project? I heard you started it last Friday，right?
—Oh！Ifor it．But I haven’t decided when to do it．
| A．have prepared | B．had prepared |
| C．have been preparing | D．was preparing |
a diary every day and you’ll improve your writing．
| A．Keeping | B．To keep | C．Keep | D．If you keep |
If we had taken such effective measures much earlier, the riverso seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |