【小题1】Jack, one of my buddies, kept 【】 (nod) his head as if he completely understood what

【小题1】Jack, one of my buddies, kept 【】  (nod) his head as if he pletely understood what I said.
【小题2】Years ago we didn't know this， but recent science 【小题  1】nodding  (show)that people who don't sleep well will soon get ill.
【小题3】He with his friends 【小题  2】has shown  (lie) in the sun and feeling relaxed on the Long Beach when his new boss called him.
【小题4】We first met on a train in 2000. We both felt immediately that we 【小题  3】was lying  (know)each other for years.
【小题5】Listen to the speaker carefully, or you 【小题  4】had known  (miss) something important .
【小题6】— The food here is nice enough. 
— Yes,my friend 【小题  5】will miss  (introduce) me a right place.
【小题7】Jack told me that they 【小题  6】introduced  (return)to the USA from Shanghai by the end of next November.
【小题8】To prevent the things getting worse, action should 【小题  7】would return  (take) at once.