London - Australia flyhalf Quade Cooper says they are preparing for a tough backlash when they take on Argentina in London on Saturday.
Cooper believes the Pumas will want to get one over Australia after losing to the Wallabies in the Rugby World Cup last year 29-15 and then in Perth 36-20 a couple of weeks ago.
"They're going to be a tough side and they're going to want to rectify firstly, Perth and also the semi-final," Cooper told Sbs.com.au.
"They played well and left a few opportunities out on the field as well.
"So they're going to come out all guns blazing but we understand that."
Cooper says Australia have to capitalise on their opportunities after squandering a few chances against South Africa in Pretoria last week.
"They were obviously doing everything they could, putting their bodies on the line."
"But we blew a lot of opportunities. We've just got to be better.
"It's not necessarily us being frantic, but just taking opportunities when they come rather than waiting an extra phase to be a little bit more safe."