问题补充:
---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
答案:
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。