Поставьте предложения в отрицательную и вопросительную форму. the students will be testing the equipment tomorrow. the situation has already changed. my friend studies english at the institute. he is a good engineer. he was translating the text when the telephone rang.

The students will be testing the equipment tomorrow.

Will the students be testing the equipment tomorrow?

The students's won't be testing the equipment tomorrow.

The situation has already changed.

Has the situation already changed?

The situation hasn't changed yet.

My friend studies English at the Institute.

Does your friend study English at the Institute?

My friend dosn't study English at the Institute.

He is a good engineer.

Is he a good engineer?

He isn't a good engineer.

He was translating the text when the telephone rang.

Was he translating the text when the telephone rang?

He wasn't translating the text when the telephone rang.