He pretended to be a doctor, but ________ he is a cheat.[ ]

I didn’t hear the phone because my father TV then.

Old Henry thought for a while, and then he came up _______ a wonderful idea.

Tu Youyou, 85-year-old Chinese female scientist, was awarded Nobel Prize in Physiology and Medicine in 2015.

Paul made a nice cage to keep the little sick bird it could fly.