4. I had a 　　　　　(粗略的) idea where the sunken ship lay.

3. The dictionary is n　　　　　 to be found.

2. He g　　　　　 at the envelope and recognized his uncle’s handwriting.

1. He o　　　　　 a stranger hanging around the store.

10. easier/faster/quicker

9. achieved

8. understanding

7. managers

6. depending/based

5. reach