_______ of the heavy burden of homework, the children rushed out of the classroom and enjoyed themselves.
| A．To be free | B．Freeing | C．To free | D．Freed |
32．________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 |
31．—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 |
30．__________a diary every day and you’ll improve your writing．
| A．Keeping | B．To keep | C．Keep | D．If you keep |
29．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 |
28．Thousands of Haitians cheered as the Chinese medical team arrived，many of________even
cried with joy.
| A．those | B．them | C．wh om |
D．Who |