Chinese people have been using paper for over______ years.
#51001
A
thousands
B
two thousand
C
thousands of
D
thousand
推荐题目
—Is Mary ? —No, she is a girl.
#51392
A
twelve years old; fourteen years old.
B
twelve years old; fourteen -year -old.
C
twelve - year - old; fourteen years old.
D
twelve - year - old; fourteen - year -old.
_____ of the water _____ polluted. We must try to protect our environment.
#51088
A
Two third; are
B
Two third; is
C
Two thirds; are
D
Two thirds; is
There are over ______ books of all kinds in the library.
#51821
A
nine hundred of
B
nine hundreds
C
nine hundred
D
hundred of
Two ______ trees have been planted along the lake since 1998.
#51883
A
thousands of
B
thousand of
C
thousands
D
thousand