Помогите!!! Put the verb into the necessary form:
1. He (to have) free time tomorrow.
2. The students (to work) at plant last week
3. My father (to go) on business trip next month.
4. If you (to ask) him, he will help you.
5. Nick often (to prepare) for his lessons in the reading-room
6. The weather (to be) cold today

1. Is having

2. Worked

3. Is going to go

4. Ask

5. Prepares

6. Is going to be