Ⅰ. 单项选择（20分）
1. Jimmy _______ TV when his mother got home.
A. will watch B. watches
C. is watching D. was watching
【解析】选D。句意：当妈妈到家时，Jimmy正在看电视。由时间状语从句“when his mother got home”可知主句时态应用过去进行时。故选D。
2. ______ I was walking home from school, I met an old friend.
A. Because B. Until
C. Although D. While
【解析】选D。引导时间状语从句，意为“当……的时候”，用连词while引导，表示某动作在进行或状态的持续。
