阅读理解。 One evening, Mr and Mrs Brown with Mr and Mrs White were on their way home. It was very hot and they felt thirsty. They went to a restaurant. A waiter came to their table and asked what they wanted to have. One lady said that she only wanted black tea. One of the gentlemen asked the other whether he wanted some sugar in his milk. Mrs Brown said that her husband and she didn't like beer. One of the Whites said she wanted coffee. Then the waiter brought them a cup of black tea, a glass of milk, a mug (大杯) of beer and a cup of coffee. What did each of them want to have? 1. They went to a restaurant because ______. [     ] A. they are hungry B. it was very hot C. they are thirsty D. both B and C 2. Mrs Brown wanted to have ______. [     ] A. a cup of black tea B. a glass of milk C. a mug of beer D. a cup of coffee 3. Mr Brown wanted to have ______. [     ] A. a cup of black tea B. a glass of milk C. a mug of beer D. a cup of coffee 4. Mrs White wanted to have ______. [     ] A. a cup of black tea B. a glass of milk C. a mug of beer D. a cup of coffee 5. Mr White wanted to have ______. [     ] A. a cup of black tea B. a glass of milk C. a mug of beer D. a cup of coffee