Put 'there + be' in the tense and form indicated.
1. [?] students over there. (simple present, negative)
2. [?] a small child in the car. (simple present, affirmative)
3. [?] many reasons for this. (simple past, affirmative)
4. [?] a bed in that room? (simple past, interrogative)
5. [?] an accident. (present perfect, affirmative)
6. [?] enough food. (future, negative)