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判斷下面句中動詞不定式的功能：

Our main task is to realize peace of the whole world．

判斷下面句中動詞不定式的功能：

The country is known to be rich in natural resources．

判斷下面句中動詞不定式的功能：

We are planning to build a factory here．

判斷下面句中動詞不定式的功能：

Do you have anything else to add?