TELEVISION ________ VERY POPULAR SINCE THE 1950S.A. IS B. WAS C. HA...
21.
Television ________ very popular since the 1950s.
A. is
B. was
C. has been
D. had been
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21.
Television ________ very popular since the 1950s.
A. is
B. was
C. has been
D. had been