He is going camping _____ 6:00 _____ the morning of Jul
| He is going camping _____ 6:00 _____ the morning of July 21 st . |
| [ ] |
| A. in; on B. on; at C. at; on D. at; in |
可能相似的问题
| He is going camping _____ 6:00 _____ the morning of July 21 st . |
| [ ] |
| A. in; on B. on; at C. at; on D. at; in |