问题
选择题
Green tea, many experts suggest, should be drunk regularly to improve health.
A．which
B．where
C．when
D．as
答案
答案：D
考查定语从句，先行词为Green tea，从句中suggest后缺少宾语，故用关系代词，可排除B和C，再根据语意设空的句子意思为正如专家建议的那样，所以选D。
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