1. Yesterday, I happened to come across my old diary while I was cleaning the attic. - come across means find by chance 2. Scientists say there are innumerable stars in the universe. - innumerable means countless 3. Religious wars were commonplace during the Dark Ages. - commonplace means ordinary 4. I thought I had everything fixed, when the problem reappeared. - reappear means to appear again 5. I was so anxious before my exam because I didn't study too much. - anxious means worried
