It is said that the gravity on Mars is only about          of the gravity on earth.
#51511
A
three-eighths
B
third-eighth
C
third-eighths
D
third-eight
推荐题目
 December is the ______ month in a year.
#51615
A
twenty
B
twelve
C
twentieth
D
twelfth
Two             students in our school will go to the beach.
#51625
A
hundred
B
hundreds
C
hundreds of
D
hundred of
________of the students in our class  are  from the north.
#51399
A
Two nineth
B
Two ninth
C
Two ninths
D
Two nineths
—How often do the students play sports?
#51711
A
Twice a day
B
Since last night
C
For two hours
D
A month ago