To test eggs , ___them in a bowl of water: if they float they are bad; if they sink they are good.
A．put B．puttingC．to putD．to be putting
A

試題分析：句子所要表達的意思是，檢測雞蛋，要把它們放在一碗水中，如果它們浮起來就是壞的，如果它們沉下去就是好的。把它們放在一碗水中是祈使句，應(yīng)該用動詞原形，故選A
點評：祈使句應(yīng)該用動詞原形
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