根据句意，用所给单词的适当形式填空。
____ He was so tired that he stopped ________(have) a good rest.
____ The girls are old enough, they can take care of ________ (they).
____ Next Thursday is my brother's _______ (twelve) birthday.
____ There are a few _________ (different) between the twins.
____ We must be __________ (care) when we cross the busy street.
____ ______ ______ (事实上) , water covers most of the earth.
____ Kangkang is ______ his mother ______ (带…参观) his school.
____ Taiwan ______ ______ (属于) the PRC.
____ After many years'hard work, her dream ______ ______ (实现) at last.
____ The boy ______ ______ (迷路) and cried on the street.

下面图形的面积____．(单位：厘米)

若单项式2x^2m-3y与x³y^3n-2是同类项，则符合条件的m，n的值为 (    )