---Wow! These inventions are amazing.—They were all invented _______years ago.
#51552
A
hundred
B
hundreds
C
hundred of
D
hundreds of
推荐题目
The number of the students in our grade _______about six ______, ______ of them are girls.
#51620
A
are, hundreds, two- thirds
B
is, hundred, two- third
C
is, hundred, two thirds.
D
are, hundreds, two third
Several  ________ students came to the meeting. 
#51614
A
thousand
B
thousands
C
thousand of
D
thousands of
My brother is ____ years old.Today is his _____ birthday.
#51690
A
nine, nine
B
nine, ninth
C
ninth, ninth
D
ninth, nine
——What should we do now, Mr. Clark?——Please turn to Page_____and look at the_____picture.
#51502
A
Twelve;fifth
B
Twelfth;fifth
C
Twelve;five
D
Twelfth;five