On the bus, all the people except the driver ______ to talk and laugh during the journey.
Bessie seemed __________ steadily.
All at once, I noticed that my wife __________ to be filled with alarm.
A recent survey revealed that __________ dogs barking incessantly in the night that we disliked most.
If you __________ succeed, you must study as hard as you can.
—Mike, why didn’t you come yesterday? —I __________, but I had an unexpected visitor.