---What did you do last weekend, Sarah?
---I .
A. would do my homework
B. was practicing speaking English
C. had surfed on the Internet
D. studied for the test
网友回答
A. would do my homework
B. was practicing speaking English
C. had surfed on the Internet
(答案→)D. studied for the test
解析：此题该用一般过去时，题目中有明显的过去时标志词last weekend。