Mr. Smith usually got up late in the morning， so Mrs. Smith always called him up to make him not be late for work. One day， they had a loud and long quarelling (吵架)， so they were not speaking to each other. In the evening Mr. Smith handed his wife a piece of paper. He wrote "call me at 7 in the morning" on it. Then without a word， he went to sleep.
Next morning， when Mr. .Smith woke up， it was already 9:30.He got up and put on his clothes quickly. As he went out， he found another piece of paper on the table ."It's seven o'clock .Get up!"
If Mrs. Smith did not wake him up， usually Mr. Smith might ________.
A. be late for work
B. get angry
C. sleep all day
Why weren't they speaking to each other? ____________.
A. They quarreled.
B. They couldn't speak
C. They were afraid to speak
Why did Mr. Smith write a piece of paper to ask his wife to call him up the next morning?
A. He liked writing
B. He was afraid that his wife could forget
C. They were not speaking to each other.
Mrs. Smith woke up the next morning_______.
A. before 7             B. after 7         C. at 9:30
Mr. Smith woke up late for _______.
A. two and a half hours
B. one hour
C.  three hours