The computer was invented in the 1940’s
题型:选择题
问题:
The computer was invented in the 1940’s and ______ quite a lot ever since.
A.was changed
B.had changed
C.has been changed
D.will change
The computer was invented in the 1940’s and ______ quite a lot ever since.
A.was changed
B.had changed
C.has been changed
D.will change