10 past simple, past continuous, past perfect, past perfect continuous. 1. brian met me after he (return) from his business trip. 2. henry (go) camping with his friends last weekend. 3. bill's coat and mittens were wet because he (play) snowballs with his friends in the yard. 4. he (wait) for me while i (speak) ro my biology teacher.
2) went
3)has played
4)had waited , was speaking