35. The clever boy made a hole in the wall, ____ he could see ____ was going on inside the house.
The policeman warned the driver ________ so carelessly.
You can never know ________ when she received our nice birthday presents.
I don’t like the way ______you speak to him. Which the following answer is wrong?
---What can I help you, sir? --- I’d like to have this watch_______.
The thief, who was put in ______ prison. had____ feeling of guilt(内疚), so he made ________ great progress.