More than two _______years ago, people knew little about the universe.
#51657
A
thousands
B
thousand
C
thousands of
D
thousand of
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There are_________ students in my school._________ students in my school is over 5000.
#51675
A
a number of, A number of
B
the number of, The number of
C
the number of, A number of
D
a number of, The number of,
      —Can I help you?—I’d like ____________ for my twin daughters.
#51901
A
two pair of shoes
B
two pairs of shoe
C
two pair of shoe
D
two pairs of shoes