More than two _______years ago, people knew little about the universe.
#51657
A
thousands
B
thousand
C
thousands of
D
thousand of
推荐题目
There are _____________ doctors and nurses in that hospital.
#51528
A
thousand
B
two thousand
C
two thousands
D
thousands of
_______of the students ______girls in our class.
#51479
A
Two percents; is
B
Twenty percents; are
C
Two percent; are
D
Twenty percent; is