Question

【题目】Last fall, I went to the US as an exchange student. I’ll never forget my homestay there ______ I became a real DIY enthusiast.

A. where B. when C. that D. which

Answer 1

【答案】B

【解析】考查定语从句及句意理解。句意：去年夏天我去美国做交换生，我不会忘记我在当地居民家居住的时期，当时我成了一个真正的DIY爱好者。这是一个定语从句，先行词为homestay 居住的时期表示时间，从句中缺少时间状语，故B正确。