1．(2019·湖南六校联考)In many places like Britain and Italy, if you leave the house without your wallet, you’ll be a difficult situation all day.
in 解析：句意：在很多像英国和意大利这样的地方，如果你没带钱包就出门，你整天都会处于困境之中。in a(n)．..situation意为“处于某种处境”，为固定搭配。
2．(2019·湖南岳阳一中月考)Meanwhile, those who are successful and famous have to deal with constant media attention. They are also huge pressure to appear young and beautiful.
under 解析：句意：同时，那些成功人和名人不得不应对媒体的持续关注。他们也处于保持年轻漂亮的巨大压力中。under pressure 是固定短语，意为“处于压力中”。
3．(2019·湖北华大联盟质检)The theory of kung fu is based classical Chinese philosophy(哲学)．
on/upon 解析：base...on/upon...为固定搭配，意为“建立在……基础上”。
4．(2019·山东烟台期中)The city looked almost the same as it had looked in A．D. 79. There were streets and fountains, houses and shops. There was a stadium 20，000 seats.
with 解析：句意：这座城市看起来与公元79 年的样子几乎相同。有街道和喷泉，房舍和商店。有一个有两万个座位的体育馆。空格处用介词with 表示“有……”，作后置定语修饰stadium。
