Answer:
See below
Step-by-step explanation:
Sentence:
I crossed the river.
Tense:
Negative Sentence:
- Use of not.
- Since the sentence is past simple, we will use did.
- Use of first form after did.
ā I did not cross the river.
Interrogative sentence:
- Interchange subject and verb.
- Use of question mark.
ā Did I cross the river?