Anonymous asked in 社會與文化語言 · 1 decade ago


Decertification is the creation of deserts where ----- had exiested before.a. never b. neither c. none d. noanswer C請問怎麼判斷何時選no/not/none/without呢 ?

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  • 1 decade ago
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    Decertification is the creation of deserts [where ----- had exiested before.][where.....]WHERE所引導的子句----要填名詞OR代名詞阿!*************************************          Desertification is the process by which a piece of land becomes dry, empty, and unsuitable for growing trees or crops on.  A third of Africa is under threat of desertification.     Farming is leading to the desertification of large areas of the planet.

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