Only in this way ______ learn English well.
| A．you can | B．can you |
| C．should you | D．you should |
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！I____for 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 fiver ____ so seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |