It may take _________ years to make such robots .        
#51467
A
hundred of
B
two hundreds
C
hundreds of
D
hundred
推荐题目
We don’t have enough nurses to look after the patients. At least______ are needed.
#51723
A
ten another nurses
B
more ten nurses
C
other ten nurses
D
another ten nurses
—Did you know that the earth is the home of        animals?
#51466
A
million
B
million of
C
millions of
D
millions
—When do you usually get up?—____________________.
#51514
A
At fifty past six
B
At half to seven
C
At a quarter to seven
D
On a quarter past six