50. The grandson makes a lot of noise as (   ) .

• A、he never cares whether the neighbors might want to live in peace and quiet

• B、 the walls of the building are thin

• C、he likes to listen to his radio early in the morning

• D、friends come to visit him

53 (   ),

45. Her parents agreed to take Karen home because (   ) 

• A、thus they would save money

• B、medical funds wouldn't cover any of the full time medical care

• C、 they couldn't pay for her hospitalization

• D、they hoped to make her satisfied