Свободное сочинение в present perfect continuous

We have been preparing for our exam since morning. but it's still so hard to understand questions.he has been reading the book for three hours.i have been waiting for him for several hours. he must explain me the topic. he has been explaining me the topic for a 30 minutes. now i'm understanding this theme.

dasha is taller, then dima

mother is cooking now

you are really played with my sister yestarday

my fatheris very strong

my sister is very short

this girl is very beautiful, but this girl is ugly

oh, you very handsome

this trousers very long

you cat is large? but my cat is thin 

в этом нужно убрать лишнее слово из строки.

1. giraffe 

2.   penguin 

3.   hipo

4.   crocodile