问题
选择题
Peter was so excited _________ he received an invitation from his friend to visit Chongqing.
A．where
B．that
C．why
D．when
答案
：D
：考查状语从句。本题主要是从句意出发，以判断出使用哪个副词。句意：当他收到朋友邀请他取重庆的邀请的时候，Peter是如此兴奋。根据句意说明D正确。
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