1.The police______(look) for the boy when it rained.
2. -What do you think of the answer?
      -Sorry,I didn't hear you. I________(think) about something else.
3. He arrived here even _________(early) this morning.
4. Do you find it easy __________(ride) a bike?
5. I first met Lisa three years ago. She_________(work) in radio at the moment.