Some scientists believe that there will be more robots in       years.
#50952
A
hundreds of
B
hundred of
C
two hundreds of
D
two hundreds
推荐题目
Lillian said memorizing the words of pop songs helped _________.
#51493
A
a lot of
B
lot of
C
a little
D
a little of
On National Day there are more than four     people in the park.
#51600
A
thousand
B
thousands
C
thousands of
D
thousand of
--Is that Mr. Green? ---No, Mr. Green is an ___________ man. But this man is only about _________.
#51812
A
80-year-old; 18 years old
B
80-years-old;18 years old
C
80-year-old;18-year-old
D
80 years old;18-year-old
I think __________ should be allowed to drive.
#51761
A
sixteen year old
B
sixteen-year-olds
C
sixteen years old
D
sixteens year old