e back in ________ .
A.one or two days B.o or two days C.one and two days D.a day and two
44.―How often do you write to your parents abroad?
― ________ .
A.Twice a month B.Second times a month
C.A second time a month D.second a time a month
45. ________ people died in the traffic accidents in the world.
A.Thousand of B.Thousands of C.Ten thousands of D.Ten thousand of
46.In the 1850s, about ________ was covered by forest in the USA.
A.third B.a third C.the third D.a thirds
47.This is her ________ birthday, I think.
A.twenty B.twentieth C.the twentieth D.the twenty’s
48.September ________ is Teachers’Day.
A.the ten B.tenth C.the tenth D.the ten’s
49.There are ________ children in the country school.
A.two thousand five hundred and sixty B.two thousands five hundred and sixty
C.two thousands five hundreds and sixty D.two thousand five hundreds and sixty
50. ________of the soldiers is about two thousand.
A. A number B. The number of C. A great number D. The biggest numbers of