get revenge foralert … tofollow suitput outstay on the sidelineslay siege toturn upin the face of 1. Although it is painful to watch him struggling with the difficulty, it is probably better to ______ unless he asks for help.2. An anonymous letter ______ the police [填空] the possibility of a terrorist attack at the airport.3. We had never thought people would be interested in the house, so we were quite surprised that more than a hundred people ______ at the auction.4. Almost two years had passed since the enemy first tried to ______ the town, but instead of being taken over, the town seemed as strong as ever.5. As was shown in the study, when parents showed feelings of despair, their kids ______ and acted in the same way.6. ______ growing alarm about the abuse of research data, scientists from around the world met to discuss how to supervise their own research.7. The company planned to build computer models that can track the weather, and then to ______ weather warnings on its website.8. He was waiting for a good opportunity to ______ all the embarrassments that the game inflicted on him last year.