Напишите предложения в вопросительной и отрицательной форме. Переведите предложения на русский язык.

1. Twice a year students have vacations.

2. The first-year students study general engineering subjects.

3. The dean will send the students to a big plant in summer.

1) When have students vacations?

Twice a year students haven't vacations.

2) Which subjects do students study the first-year?

The first-year students not study general engineering subjects.

3) Will the Dean send the students to a big plant in summer?

The Dean won't send the students to a big plant in summer.