Question

Peter was so excited _____he received an invitation from his friend to visit Wuxi.

A．where

B．that

C．why

D．when

Answer 1

D

考查从句的引导词。句意“当皮特收到来自朋友的邀请他访问无锡的信时，他是如此的兴奋。”A“哪里”；B只起引导作用，无意义；C“为什么”；D“当”。故选D。