The Past, Present And Future Poem by nimal dunuhinga

I was the usual detainee who stood out of the class most of the time.
The lean English teacher who has a slight dimple on the chin when she smiles, once called me in and asked me to write three sentences the past, present and future tense.
I wrote them without any hesitation.
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1.They built massive bridges.
2. They build massive bridges.
3. They will build massive bridges for whom and where do you cross?