Question

【题目】The mobile phone has influenced people's life a lot since it ____________.

A.invents
B.invented
C.is invented
D.was invented

Answer 1

【答案】D
【解析】考查动词时态和动词被动语态；A. invents主动一般现在时态；B. invented主动过去时态；C. is invented被动一般现在时态；D. was invented被动过去时态；句意：自从手机发明以来，它极大地影响了人们的生活。根据句意，故选D。