1. Clement Clarke Moore wrote the poem in 1823.
-> The poem was written by Clement Clarke Moore in 1823.
2. People will melt the small glass pieces under the great heat.
-> The small glass pieces will be melted under the great heat.
3. “I love to go skiing in the winter.” Hoa said.
-> Hoa said she loved to go skiing in the winter.
4. “Do many tourists visit Ha Long Bay every year?”
-> I asked Nam if many tourists visited Ha Long Bay every year.