The mobile phone has influenced people’s life a lot since it      .
#39054
A
invents
B
invented
C
is invented
D
was invented
推荐题目
I want you _____ a story.   
#42547
A
tells
B
tell
C
to tell
D
told
—When _______ this stone bridge______ ?—In 1935.
#40011
A
did; build
B
was; built
C
does; build
D
is; built