英语选择题要有原因.

The story took place_____.

A.in the 1950 B.in 1950s C.in the 1950's D.in the 1950s
2.My father left home at about____.
A.six thirty B.thirty six C.thirty to six D.six past thirty
3._____the students usually surf the Internet to get information.
A.A.60 percents of
B.60 percant
C.60 percent of
D.60 percents