-A ruler is 2 dollars and a pen is 5 dollars. How much are they? -They are               
#51155
A
$22
B
$3
C
$7
D
$5
推荐题目
Simon is wearing clothes from _____.
#51659
A
the 1980
B
1980s
C
the 1980s
D
1980’s
 It took _________ people _________ the work. 
#51447
A
hundreds of, finishing
B
hundred of, to finish
C
hundreds of, to finish
D
hundred of, finishing
—Did you know that the earth is the home of        animals?
#51466
A
million
B
million of
C
millions of
D
millions
Each of the singers _______ a ________ swimming pool.
#51687
A
has; fifty-metres-long
B
have; fifty-metres-long
C
has; fifty-metre-long
D
have; fifty-metre-long