Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.
In the past，most American mothers were at home to take care of their children during the day. Now,  36  , many mothers are working. More than half of the American women with young children have   37   outside the house.
American families solve the child care   38  in different ways. Some parents allow older children to stay at home alone after school. The parents   39   make sure that their children, usually not younger than 10 years old, understand   40   rules and can deal with emergencies (紧急情况). Other parents say they would   41 allow their children to be at home alone. They usually   42  someone to take care of the children.
Some parents in the U. S. find their own ways to cut the cost of child care. They join child care   43   . Each person in the group   44  for the children of other group members at different times. Some parents ask local churches, schools and social organizations to help   45   activities for the children. These child care choices often cost   46   or no money. Many American parents, however, still struggle with the problem of   47   good child care at a reasonable price.

A．therefore B．otherwise C．thus D．however

A．children B．jobs C．houses D．money

A．problem B．question C．chance D．choice

A．can B．must C．may D．ought

A．dangerous B．safety C．funny D．true

A．rather B．certainly C．always D．never

A．tell B．stop C．pay D．invite

A．schools B．groups C．clubs D．hospitals

A．cares B．sends C．asks D．pays

A．have B．offer C．play D．join

A．much B．little C．enough D．a great deal

A．taking B．finding C．losing D．suffering