The mobile phone has influenced people's life a lot since it __________.
#36751
A
invents
B
invented
C
is invented
D
was invented
推荐题目
She ____________ as an animal trainer since 2003.
#37694
A
has worked
B
works
C
will work
D
worked
The boys           when the teacher came in. So she was very angry.
#36667
A
were doing homework
B
were cleaning the classroom
C
were fighting
D
were learning English
Her grandmother         in 1997. She has           for 13 years.
#39890
A
dead, dead
B
died, been dead
C
died, died
D
died, dead
Don’t make any noise. The pandas        over there. 
#39700
A
are sleeping
B
have slept
C
will sleep
D
were sleeping