1.A consumer watchdog in the UK has reported that many Internet sites are full of fake reviews.
be full of充满;横生
The future seems to be full of hope.
前途看来充满希望 。
2.Others offered money, free samples or upgrades in exchange for five-star reviews.
in exchange for交换
Tom gave Helen an apple in exchange for a piece of cake.
汤姆用一个苹果与海伦换一块蛋糕 。