Ⅰ. 单句语法填空
1. As soon as the seat belt sign had been switched (switch) off, the passengers rushed out.
2. Players’ spirit had been motivated (motivate)by the words said before the competition began.
3. The room had been occupied(occupy) for three hours by the time it was broken two minutes ago.
4. A senior doctor admitted he had been distracted(distract) when he failed to spot signs of cancer in a patient.
5. Because all the doubts had been clarified (clarify), he won respect from others again.
6. The email to the boss had been sent (send) to the wrong address before he found the mistake.
7. After the tickets had been bought(buy), we were able to enter the palace.
8. We were not able to stay overnight at the hotel since the room had not been reserved(reserve) in advance.
