III. Open the brackets:
1. I knew they (to wait) for me at the metro station.
2. I didn't know that you already (to wind) up the clock.
3. Sarie understood why Lanny (not to come) the previous evening.
4. She asked me if I (to remember) the legend about Merlin.
5. Father said he (can) not tell me the right time, his watch (to break).
6. I suppose they (to ring) me up after their arriving home.