Do you have any difficulty ______ these flowers? I’d like to help you if you need.
A.to plant
B.for planting
C.with planting
D.in planting
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D解析试题分析：考查固定词组：have difficulty （in）doing，做…有困难，用动名词做宾语，句意：中这些树有困难吗？如果你需要我可以帮你。选D。考点：考查固定词组点评：“做…有困难”还可以表达成：have difficulty/trouble with sth.