省略 — 英语词汇题
题目
单项选择：选出下列句子中省略使用正确的一项。
A. While walked in the park, we saw many fascinating animals.
B. If possible, please visit the theme park before it closes.
C. When asked about the park, my answer was that was beautiful.
D. Though tiring, but the trip to the national park was worthwhile.