---How was your weekend? ---Great! It was my grandfather’s _________ birthday. We enjoyed ourselves.
#51413
A
seventy
B
seventieth
C
the seventieth
D
seventeenth[
推荐题目
Several  ________ students came to the meeting. 
#51614
A
thousand
B
thousands
C
thousand of
D
thousands of
I think ____ of the materials I listened to at the beginning of the exam ____ easy.
#51604
A
three fourths; is
B
third four; are
C
three fourths; are
D
three fourth; are
Two             students in our school will go to the beach.
#51625
A
hundred
B
hundreds
C
hundreds of
D
hundred of
 The tall building has ______ floors. And Tony lives on the ______ floor.
#50954
A
twelve; twelve
B
twelfth; twelfth
C
twelfth; twelve
D
twelve; twelfth