What was David Johnston doing when the explosion occurred?
举一反三
- What when the accident occurred A: have you done B: were you doing
- When the _____ occurred, many people were so frightened that for several hours afterwards they could not say a word ( ). A: exploration B: expedition C: exclusion D: explosion
- This is the place ( ) the traffic accident occurred A: where B: when C: how D: What
- What was the hero doing when his boss came in?
- What cultural shock does David have when he lived in Germany?