—What’s this? —It’s a machine which was invented in __________century in China.
#51455
A
six
B
sixth
C
the six
D
the sixth
推荐题目
Jackie Chan has donated ______ dollars to charity. –He is an example to us all. 
#51070
A
thousand
B
thousands
C
thousand of
D
thousands of
_____ soldiers and doctors have been in Wenchuan to help the people there.
#51747
A
Thousand of
B
Two thousands
C
Thousands of
D
Many thousands 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