Read these sentences and fill in the gaps with 'could', 'can', 'couldn't', 'can't'. 1. Adam and his mother open the door because it was locked. 2. Before the nuclear disaster in the 1980's, people grow everything in their gardens. 3. Steve solve this problem now. He needs time.

Mary was cooking a salad at 7 o'clock yesterday.

They were argueing when I entered

Bill was surfing the net when the dootbell rang.

as for me i like parrots. they are my favourite pets. they are clever and nice. i've got a parrot. his (или сейчас иногда придираются учителя, что, говоря о животных, нужно употреблять it) name is kesha. he's blue. he is little. he has got a small head, a yellow beak, a short neck, two wings and a long tail. he lives in a cage. i like him, because he is very smart (as he can talk) and he is very beautiful.

i think that if a person has a pet, he will be very responsible. 

i prefer having an ordinary pet, because some exotic pets may have different deseases and veterinary surgeon willn't know how to cure these deseases. 

Zoo is the one of the most exciting entertainment on the Earth.I find it kind of interesting because I am interested in animals and like nature.As I live in the city I cannot see a lot of rare animals anywhere but at zoo.I'm sorry for animals as they lost their freedom,everyone has a right to live free life and animals should live in wild life but what to do to ill animals?Zoo is their chance to be alive and have wonderful life.They are in cage but the are loved.They are in cage but they have a lot of conditions like real ones.I can understand GreenPeace but I want to give a chance to people to learn more about nature and one more chance to live for weak animals.