Scientists think that there has been life on Earth for _______ years.
#51626
A
illions
B
millions of
C
illion of
D
illion
推荐题目
They are reading ________lesson on Page ________．
#51803
A
nine；Twelve
B
nine；the twelfth
C
the ninth；Twelve
D
the ninth；the twelfth
The volunteers sent _______ books to a mountain village school on Children’s Day.
#51664
A
two hundreds of
B
two hundred of
C
two hundreds
D
two hundred
There are students in our school.
#51445
A
three thousand
B
three thousand of
C
three thousands
D
three thousands of
About ____of the students in Grade Nine this year were born in the_____.
#51730
A
three five; 1996.
B
three fifths; 1990s
C
third fifth; 1997.
D
third fifths; 1990s
There are ______students in my class, twenty girls and twenty boys.
#51489
A
forty
B
four
C
twenty
D
fourteen