The members of both the House of Representatives and the Senate … by the citizens of the United States. A elect B elects C are elected D is elected

42 Birds make nests in trees … hide their young in the leaves and branches.
A can where they B where they can C where can they D where can

43 Sleeping, resting and … water and other fluids are the best ways to care for a cold. A to drink B drank C drunk D drinking

44 The growth of two-income families in the USA … millions of people moving to a new social class.
A has resulted in B results of C result of D resulting in

45 … problems in sailing in tropical seas is the coral reefs.
A One of the biggest B The biggest one C Of the biggest one D There are the biggest

46 Some people … that human beings will never use all the natural resources on earth.
A believing B believe C are believing D are believed

47 Computers … access to information instantly available just by pushing a few buttons.
A makes B has made C have made D have been made

48 So that people could work together effectively, they need … each other’s needs. A to be sensitive to B is sensitive for C sensitivity D sensitive

49 … that more compact-discs will be bought by consumers in the next five years.
A They are expected B It expects C It is expecting D It is expected

50 An increasing number … office workers use computers as their daily routine.
A from B of C in D between