1.The mistakes children make in learning to speak tell linguists more about how they learn language than the correct forms they use.
(A) how they learn language than
(B) how one learns language than
(C) how children learn language than do
(D) learning language than
(E) their language learning than do
2.In the United States， trade unions encountered far more intense opposition against their struggle for social legitimacy than the organized labor movements of most other democratic nations.
(A) against their struggle for social legitimacy than
(B) in their struggle for social legitimacy than did
(C) against their struggle for social legitimacy as
(D) in their struggle for social legitimacy as did
(E) when they struggled for social legitimacy than has
3.A large rise in the number of housing starts in the coming year should boost new construction dollars by several billion dollars， making the construction industry's economic health much more robust than five years ago.
(A) making the construction industry's economic health much more robust than five years ago
(B) and make the construction industry's economic health much more robust than five years ago
(C) making the construction industry's economic health much more robust than it was five years ago
(D) to make the construction industry's economic health much more robust than five years ago
(E) in making the construction industry's economic health much more robust than it was five years ago
4.In 1982 the median income for married-couple families with a wage-earning wife was $9，000 more than a family where the husband only was employed.
(A) a family where the husband only
(B) of a family where only the husband
(C) that for families in which only the husband
(D) a family in which only the husband
(E) those of families in which the husband only
5.Chicago， where industrial growth in the nineteenth century was more rapid than any other American city， was plagued by labor troubles like the Pullman Strikes of 1894.
(A) where industrial growth in the nineteenth century was more rapid than any other American city
(B) which had industrial growth in the nineteenth century was more rapid than any other American cities
(C) which had industrial growth was more rapid than any other American city in the nineteenth century
(D) whose industrial growth in the nineteenth century was more rapid than any other American city
(E) whose industrial growth in the nineteenth century was more rapid than that of any other American city