根据首字母完成单词。
1. I'm taking a v______ in Hong Kong next year.
2. I didn't have a camera, so I r______one when I went sightseeing in Hawaii last summer.
3 . I waited u______ 11 last night, but he didn't get back.
4. I s______ half an hour watching TV last night.
5. When did your sister get b______ from Thailand?