I. 单项选择（20分）
1. — _____ was your vacation?
—It was great!
A. When B. What C. How D. Where
【解析】选C。句意：——你的假期过得怎么样？——好极了！询问“怎么样；如何”，用疑问词“how”。
2. —When ______ you _______ to the beach?
—Two days ago.
A. do; go B. were; go
C. did; go D. are; going
【解析】选C。由答语“两天前”可知问句应该用一般过去时态。行为动词的一般过去时在疑问句中要借用助动词did，后加动词原形。故选C。
3. He ______ his uncle in Beijing last weekend.
A. visit B. visits C. is visiting D. visited
