请教一道英语的选择题，达人进来一下````
what's____totheforestoftheUSAinthelast350years?AhashappenedtoBishappenedtoChashappene...
what's____to the forest of the USA in the last 350 years?
A has happened to B is happened to
C has happened D is happening
选哪个？？为什么？````拜托哪位可以解释下下
再输一便题目，刚刚打多了
what ____to the forest of the USA in the last 350 years?
那个中考先锋选A，
为什么不选 IS haooened?
what it has happened to to the forest for the USA in the last 350 years ?这样对吗？为什么？ 展开
A has happened to B is happened to
C has happened D is happening
选哪个？？为什么？````拜托哪位可以解释下下
再输一便题目，刚刚打多了
what ____to the forest of the USA in the last 350 years?
那个中考先锋选A，
为什么不选 IS haooened?
what it has happened to to the forest for the USA in the last 350 years ?这样对吗？为什么？ 展开
7个回答
展开全部
过去时，
排除BD
选C
排除BD
选C
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