нужно перефразировать предложения не меняя смысла с предложеным словом
1 There are only a few sandwiches left in the fridge (перефразировать добавляя слово many )
2 The acrobat slipped and fell during the perfomance last night (дабавить слово as)

1 There aren't many sandwiches left in the fridge.2 The acrobat slipped and fell as he was participating in the perfomance last night.