The mobile phone has influenced people's life a lot since it __________.
A．invents
B．invented
C．is invented
D．was invented
D
結(jié)合本題場(chǎng)景以及主句的時(shí)態(tài)可知，從句要用一般過去時(shí)的被動(dòng)語(yǔ)態(tài)。故答案為D。
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