решите пожалуйста срочно. в школу завтра. второе и третье это одно задание

а вы уверены что i must go shopping and buy a lot of food

можно написать и отдельно второе предложение I must buy a lot of food  и тогда во второй части тоже возьмите отдельно I have bought a lot of food.

Второй вариант попроще)

а там где I have also made a plan там первое не also ?

Johnny: (продолжение по тетради ) -Also I must see pictures about Australia. Jane: I must look up the weather. Also I must buy a T-shirt and a cap.Hetty: I must speak to Joe. I must also make a plan.Snakey: I must go shopping and buy a lot of food.Johnny:I have just found a book about Australia. Also I have seen pictures about Australia. Jane: I have just looked up the weather. Also I have bought a T-shirt and a cap  Hetty: I have just  spoken to Joe. I have also made a plan.    Snakey: I have just gone shopping and I have bought a lot of food.