Past and Perfect Tenses

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints or clues!
Choose the right tenses ( present perfect, past or past perfect, simple or progressive )

1. Halfway to the office Paul (turn) round and (go) back home, because he (forget) to turn the gas off.

2. I (lie) in bed thinking about getting up when the doorbell . (ring)