—Excuse me. Where is Mr Green’s office?—It’s on ______ floor.
#51893
A
seven
B
the seven
C
seventh
D
the seventh
推荐题目
Elvis Presley has sold more than one______ records all his life.
#51613
A
billion
B
billion of
C
billions of
D
billions
____________ people went to the concert which was held in People’s Square the night of May Day. 
#51874
A
Three thousand, in
B
Thousands, on
C
Many thousand, in
D
Thousands of, on
16-year-old students in England should understand fifteen _______ words.
#51588
A
thousand
B
thousands
C
thousand of
D
thousands of