Inthepasttwelvemonthstheresear

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In the past twelve months the research members ______ the effectiveness of many materials in a home building.

A．had studied

B．would study

C．studied

D．have studied

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—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

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a diary every day and you’ll improve your writing．

A．Keeping

B．To keep

C．Keep

D．If you keep

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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

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Thousands of Haitians cheered as the Chinese medical team arrived，many of even
cried with joy.

A．those

B．them

C．whom

D．who

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—Our women athletes achieved great success in the Vancouver Olympic Winter Games．
—Yes No one could perform , I think．

A．well

B．better

C．best

D．the best

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