Mr. and Mrs. Brown lived in a small house near London with their child. Sometimes Mr. Brown came back ___11___ home from work very late. At that time both his wife and his son___12___to bed. He would open the front door of his house with his key and came in very ___13___.
One night he came back late again. He lost his key ___14___ the door. He knocked at the door. But ___15___ happened. He knocked at the bedroom window. He spoke to his wife, and ___16___ to her but she did not ___17___. At last he stopped and thought for a while. Then he began to speak ___18___ a child. “Mother, I want ___19___ to the toilet.” He spoke very quietly, but at once, Mrs. Brown got up and ___20___ the door for him.
A. to                B. /                C. at      
A. was going          B. go              C. went     
A. quietly             B. slowly           C. quickly   
A. of               B. to               C. about 
A. nothing            B. something         C. a sound
A. shouted            B. told              C. talked  
A. listen to            B. listen            C. hear  
A. like               B. liked            C. liking
A. go                B. to go            C. am going to
A. locked             B. closed           C. opened