Почему в предложении what has happened? ставиться has, а не have?

She have/has burnt the cake. I have/has finished all my homework. They have/has eaten all the ice cream. He have/has read all these comics. I have/has forgotten your name. We have/has spent all our money. She have/has made a lovery dress.

You have/has ten notebooks. I have/has a desk and two chairs in my bedroom. Robert have/has a tall brother. These boys have/has blue eyes. Dana have/has two pen pals in Australia. The pupils have/has a new computer room.

Open the brackets. He (to have) a book. He has a book. He (to have/to have to) translate this text. He has to translate this text. 1. She (to have/to have to) wash the floor in this room. 2. The student (to have/to have to) clean the blackboard. 3.

Выберите have или has, напишите вопросительные и отрицательные предложения. My friend (have/has) got a family. Sam and Alf (have/has) got friends. Jill (have/has) got a friend. We (have/has) got a friend. I (have/has) got a family.

Yulia (has / have) visited the Grand canyon. Ed and his sister (has / have) traveled about the Atlantic Coast. My cousin (has/have) seen "The Big Apple". John (has/have) played five games of tennis.