4 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
Once, I was having dinner in 1 restaurant. I had my dinner interrupted when I heard someone 2 (scream) from another table. A fellow diner at the restaurant was choking on some steak. He was now holding his throat with his face turning red, while his desperate friends 3 (slap) him on the back. I went over 4 (help) the diner to his feet. Then I used the Heimlich manoeuvre. I stood behind him, made a fist with one hand, grabbed my fist with the other hand 5 (tight), and then 6 (push) up and into 7 (he) stomach in one motion. I continued doing this 8 the obstruction was forced out. If he had been a small child, I would have laid him face down on my lap so that he couldn’t collapse. We have a duty to look after one another’s welfare. How could I justify standing by and doing nothing? Recently I was out 9 shape. I always ate more and slept in. I stayed in a hospital ward for two weeks. The doctor suggested that I should get a gym membership and work out at the gym in the 10 (suburb).
