问题
选择题
The volunteers a lot of help to the community for nearly ten years.
A．offered
B．are offering
C．will offer
D．have offered
答案
答案：D
题目分析：句意：将近十年了，志愿者已经提供给社区很多帮助。for+一段时间，往往用现在完成时态。根据题意，故选D。
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