I'm 13 years old and my sister is 15 years old. So my sister is
#51712
A
one
B
two
C
three
D
four
推荐题目
There are five          students in our school.
#51568
A
hundreds
B
hundred
C
hundred of
D
hundreds of
--It’s said that __________ people died from car accidents in 2011. --How terrible! 
#51646
A
10 thousands
B
thousand of
C
10 thousands of
D
thousands of
_______of the newspaper in the world are written in English.
#51782
A
Three quarter
B
Three-fourths
C
Three-fourth
D
Third-four
_________of people will visit Beihai .
#51811
A
Thousand
B
Thousands
C
Thousands of
D
Thousand of