---Wow! These inventions are amazing. —T
题型:选择题
问题:
---Wow! These inventions are amazing.
—They were all invented _______years ago.
A.hundred
B.hundreds
C.hundred of
D.hundreds of
---Wow! These inventions are amazing.
—They were all invented _______years ago.
A.hundred
B.hundreds
C.hundred of
D.hundreds of