Spring es. It is the best time for ________ trees. A.plantingB.to plantC.plantsD.plant
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A解析这里考查学生对It's time for…和 It's time to…句型的掌握。It's time for…后面接名词或动名词，It's time to…的后面接动词原形（不定式）。例如：It's time for lunch.该吃中饭的时候了。It's time for getting up to wash.是起床洗漱的时候了。It's time for me to get up.是我起床的时候了。从上述分析。选项A只能是正确的