— Mr. Smith was really helpful when you were in financial difficulty during those years.— Definitely. I can never appreciate his kindness ________.
I wonder what it feels like to be one of______really rich. The Jenkinsons already have two Rolls Royces and now they are buying ____ third!
.I tried to call on you last week but your dog simply ____ not let me come through the gate.
I _____ my son ____ a doctor,but he wasn’t good enough at science.
When Madam Cuirie did the science experiement again, she was more careful where she _____ a mistake.
Before she realized what happened, she got ___ on the head and lost consciousness.